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According to U.S. agricultural statistics, the rate of honeybee colony collapse has slowed over the last several years, the number of which will however continue to decrease unless something drastically changes.

My Answer - B
Fact1-> The number here refers to the decline in honeybee colony. That number is a numeric quantitative term, so using amount for rate / number is not right.
Fact2-> Number of colonies will go down, not the years. Years is referred to in Option A.

A. years, the number of which will however

B. years; the number of colonies, however, will

C. years, however the amount of colonies will

D. years; the amount of which will, however,

E. years, when the amount of the colonies will, however,
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I would vote for option B

A. Pronoun error - which incorrectly modifies years
C. two clauses cannot be joined by a comma
D. ambiguous pronoun usage in an independent clause
E. when - changes the intended meaning
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According to U.S. agricultural statistics, the rate of honeybee colony collapse has slowed over the last several years, the number of which will however continue to decrease unless something drastically changes.

A. years, the number of which will however - REJECT - the structure used here after comma is incorrect . Which is incorrect . we have to talk about THE RATE of colony collapse . However needs comma before and after it .

B. years; the number of colonies, however, will - CORRECT - after semi colon the usage of subject - no. of colonies - again is correct connector and comma has been used properly for however .

C. years, however the amount of colonies will -REJECT - we are not talking about amount . However does not connect independent sentences .

D. years; the amount of which will, however,-REJECT - we need subject after semicolon . we are not talking about any amount .

E. years, when the amount of the colonies will, however, REJECT - when is a time marker and used incorrectly here . 2 IC can't be connected with when . we are not talking about the amount .
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A humble request – Please give KUDOS if you like the explanation.

The answer is B.

According to U.S. agricultural statistics, the rate of honeybee colony collapse has slowed over the last several years, the number of which will however continue to decrease unless something drastically changes.

Let us first dissect the sentence.

According to U.S. agricultural statistics, the rate of honeybee colony collapse has slowed over the last several years,
the number of which will however continue to decrease unless something drastically changes.

The correct idiom is the number of colonies


A. years, the number of which will however
The number of which – It is unclear what which refers to.

B. years; the number of colonies, however, will
This is the correct choice.

C. years, however the amount of colonies will
The amount of colonies is an incorrect idiom


D. years; the amount of which will, however,
The amount of colonies is an incorrect idiom


E. years, when the amount of the colonies will, however,
The amount of colonies is an incorrect idiom
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Is it B ?
Meaning :
This sentence is conveying a contrasting information about a prediction .
According to U.S. agricultural statistics, the rate of honeybee colony collapse has slowed over the last several years . However , the the number of colonies will continue to decrease unless something drastically changes.


According to U.S. agricultural statistics, the rate of honeybee colony collapse has slowed over the last several years, the number of which will however continue to decrease unless something drastically changes.

A. years, the number of which will however

-1. which refers to colony . we need the number of colonies to convey the proper meaning .
-2.Use of semicolon and use of comma before however would have been more clearer sentence structure .. so Out

B. years; the number of colonies, however, will

-- Corrects both the error of choice A .

C. years, however the amount of colonies will

- amount is non-idiomatic to colonies .. since colonies are countable . so out .

D. years; the amount of which will, however,

- amount is non-idiomatic to colonies .. since colonies are countable . so out .


E. years, when the amount of the colonies will, however,

- 1. amount is non-idiomatic to colonies .. since colonies are countable . so out .
- 2. Use of when make a unnecessary conditional meaning .. so out ..
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According to U.S. agricultural statistics, the rate of honeybee colony collapse has slowed over the last several years, the number of which will however continue to decrease unless something drastically changes.

A. years, the number of which will however - Incorrect, as the rate of collapse is slowed, then it should be either "number of colonies" or the "rate of which will"

B. years; the number of colonies, however, will - Correct - the sentence, then => that though the rate of honeybee colony collapse has slowed over the last several years, the number of colonies however, will decrease if nothing changes.

C. years, however the amount of colonies will - Incorrect as colonies is a countable noun, amount should be used for uncountable nouns.

D. years; the amount of which will, however, Incorrect - error same as C.

E. years, when the amount of the colonies will, however, - Incorrect - error same as C.
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According to U.S. agricultural statistics, the rate of honeybee colony collapse has slowed over the last several years, the number of which will however continue to decrease unless something drastically changes.

A. years, the number of which will however- "which" is ambiguous. It must be replaced with the word that it is referring to.

B. years; the number of colonies, however, will- Correct

C. years, however the amount of colonies will- "Amount" is incorrectly used- Use "amount" for uncountable nouns and "number" for countable nouns.

D. years; the amount of which will, however,- "Amount" is incorrectly used- Use "amount" for uncountable nouns and "number" for countable nouns.

E. years, when the amount of the colonies will, however,- "Amount" is incorrectly used- Use "amount" for uncountable nouns and "number" for countable nouns.
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According to U.S. agricultural statistics, the rate of honeybee colony collapse has slowed over the last several years, the number of which will however continue to decrease unless something drastically changes.

Since "colonies" is the countable noun - "The number of" is correct usage. Hence eliminate the options C, D, and E

Out A and B.

In option A, usage of which is incorrect, it is not modifying any noun/pronoun.

The correct answer is B


A. years, the number of which will however - Incorrect

B. years; the number of colonies, however, will - Correct

C. years, however the amount of colonies will - Incorrect

D. years; the amount of which will, however, -Incorrect

E. years, when the amount of the colonies will, however, - Incorrect
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B

According to U.S. agricultural statistics, the rate of honeybee colony collapse has slowed over the last several years, the number of which will however continue to decrease unless something drastically changes.

A. years, the number of which will however however used incorrectly; which is unclear

B. years; the number of colonies, however, will correct answer

C. years, however the amount of colonies will amount of colonies is unidiomatic

D. years; the amount of which will, however, amount of colonies is unidiomatic

E. years, when the amount of the colonies will, however, amount of colonies is unidiomatic
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According to U.S. agricultural statistics, the rate of honeybee colony collapse has slowed over the last several years, the number of which will however continue to decrease unless something drastically changes.

A. years, the number of which will however : Which is ambiguous here, it can refer to the honeybee colony, the rate, or the statistics - Incorrect

B. years; the number of colonies, however, will - Correct

C. years, however the amount of colonies will : Colonies is countable so "amount" is wrongly used - Incorrect

D. years; the amount of which will, however, : Colonies is countable so "amount" is wrongly used; "which" is ambiguous- Incorrect

E. years, when the amount of the colonies will, however, : Colonies is countable so "amount" is wrongly used, use of "when" is illogical - Incorrect
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