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06 Apr 2021, 23:08
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
68% (01:18) correct
32%
(01:30)
wrong
based on 346
sessions
History
Date
Time
Result
Not Attempted Yet
Since its invention in the 1940s, radiocarbon dating, which helps scientists in calculating the age of organic material, revolutionized archaeology and geology.
A) Since its invention in the 1940s, radiocarbon dating, which helps scientists in calculating the age of organic material, revolutionized archaeology and geology.
B) Radiocarbon dating, since its invention in the 1940s, helps scientists in calculating the age of organic material, revolutionizing archaeology and geology.
C) Revolutionizing archaeology and geology since its invention in the 1940s, radiocarbon dating, which helps scientists in calculating the age of organic material.
D) Since its invention in the 1940s, radiocarbon dating has revolutionized archaeology and geology, helping scientists in calculating the age of organic material.
E) Radiocarbon dating, from its invention in the 1940s, has helped scientists in calculating the age of organic material, and in revolutionizing archaeology and geology.
06 Apr 2021, 23:10
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OFFICIAL EXPLANATION
THE PROMPT
The word since.
When since is used as a preposition to introduce a specific time or date in the past, it is typically used with present perfect and past perfect tenses—and not simple past tense.
Since refers to a period of time that started at a specific point in the past and continues up until now (present perfect) or that continues up until another point in the past (past perfect).
Correct, past perfect: I had not seen my ailing great-aunt since 2015; she had grown thin and frail.
Correct, present perfect: Since the military coup in February of 2021, brave people have fought for democracy.
Wrong, past tense: Since he left the Republican party, Steve Schmidt loudly refused to tolerate anti-democratic proponents and supporters of the Big Lie. [correction: HAS loudly refused to tolerate . . .]
Wrong, present tense: Since yesterday, his health improves. [correction: . . . his health HAS improved]
THE OPTIONS
The use of the simple past tense revolutionized with since is incorrect.
The sentence requires the present perfect tense has revolutionized.
ELIMINATE A
The use of the simple present tense helps with since is incorrect, because the action has been taking place over a period of time in the past as well its taking place now.
ELIMINATE B
→ No main verb exists for the subject radiocarbon dating. We are left with a fragment
→ Any sentence with a relative clause (who-, which-, that-clause) will always have two verbs.
The relative pronoun (in this case, which), "eats up" the verb "helps."
ELIMINATE C
→ The sentence uses the present perfect tense has revolutionized with since to describe the effect of radiocarbon dating from its invention in the 1940s to now.
→ The phrase that begins with helping modifies the entire previous clause.
KEEP
• Concision and meaning
→ The use of in revolutionizing either lengthens the sentence unnecessarily (compare to option D) or somewhat nonsensically suggests that scientists are doing two things: calculating and revolutionizing.
Scientists themselves have not been revolutionizing archaeology and geology "out of nowhere."
Radiocarbon dating, or the scientists' use of radiocarbon dating, has done so.
ELIMINATE E
The best answer is D.
COMMENTS
ananya3 , it's been a little while—I am glad to "see" you.
Of course, I am always glad to see all the members of the SC Butler crew.
You work consistently and diligently.
You all help to create a sense of community and continuity.
You show up.
Almost all of these answers are superb.
Kudos to all.
Project SC Butler: Sentence Correction (SC1)
THE PROMPT
Quote:
• Issues?
The word since.
When since is used as a preposition to introduce a specific time or date in the past, it is typically used with present perfect and past perfect tenses—and not simple past tense.
Since refers to a period of time that started at a specific point in the past and continues up until now (present perfect) or that continues up until another point in the past (past perfect).
Correct, past perfect: I had not seen my ailing great-aunt since 2015; she had grown thin and frail.
Correct, present perfect: Since the military coup in February of 2021, brave people have fought for democracy.
Wrong, past tense: Since he left the Republican party, Steve Schmidt loudly refused to tolerate anti-democratic proponents and supporters of the Big Lie. [correction: HAS loudly refused to tolerate . . .]
Wrong, present tense: Since yesterday, his health improves. [correction: . . . his health HAS improved]
THE OPTIONS
Quote:
• verb tense error
The use of the simple past tense revolutionized with since is incorrect.
The sentence requires the present perfect tense has revolutionized.
ELIMINATE A
Quote:
• Verb tense error
The use of the simple present tense helps with since is incorrect, because the action has been taking place over a period of time in the past as well its taking place now.
ELIMINATE B
Quote:
• Fragment: the Case of the Missing Verb
→ No main verb exists for the subject radiocarbon dating. We are left with a fragment
→ Any sentence with a relative clause (who-, which-, that-clause) will always have two verbs.
The relative pronoun (in this case, which), "eats up" the verb "helps."
ELIMINATE C
Quote:
• I do not see any errors.
→ The sentence uses the present perfect tense has revolutionized with since to describe the effect of radiocarbon dating from its invention in the 1940s to now.
→ The phrase that begins with helping modifies the entire previous clause.
KEEP
Quote:
• Diction: The word from creates an awkward and unidiomatic sentence.
• Concision and meaning
→ The use of in revolutionizing either lengthens the sentence unnecessarily (compare to option D) or somewhat nonsensically suggests that scientists are doing two things: calculating and revolutionizing.
Scientists themselves have not been revolutionizing archaeology and geology "out of nowhere."
Radiocarbon dating, or the scientists' use of radiocarbon dating, has done so.
ELIMINATE E
The best answer is D.
COMMENTS
ananya3 , it's been a little while—I am glad to "see" you.
Of course, I am always glad to see all the members of the SC Butler crew.
You work consistently and diligently.
You all help to create a sense of community and continuity.
You show up.
Almost all of these answers are superb.
Kudos to all.
06 Apr 2021, 23:41
Kudos
Bookmarks
My answer is (D). It took me 01:08.
Perfect tense should be preferred when there are clear signs such as
"since 1940"
"for 20 years"
(A) Perfect tense should be used.
(B) Perfect tense should be used.
(C) Fragment
(E) I feel that "from its invention in the 1940s" should be "since its invention in the 1940s".
Perfect tense should be preferred when there are clear signs such as
"since 1940"
"for 20 years"
(A) Perfect tense should be used.
(B) Perfect tense should be used.
(C) Fragment
(E) I feel that "from its invention in the 1940s" should be "since its invention in the 1940s".
