OFFICIAL EXPLANATIONProject SC Butler: Sentence Correction (SC2)
THE PROMPTQuote:
Out of the nine hummingbird species found in Chile, the green-backed firecrown is the most widely distributed,
their range extending from north-central Chile to southernmost South America.The underlined part is supposed to be a modifier that provides further information about the green-backed firecrown.
From the nonunderlined portion, we know that the green-backed firecrown [not firecrowns] is singular and requires the singular pronoun
its.THE OPTIONSQuote:
A)
their range extending from north-central Chile to southernmost South America.
• noun/pronoun agreement
→ the singular green-backed firecrown does not agree with the plural pronoun
theirELIMINATE A
Quote:
B)
its range extends from north-central Chile to southernmost South America.• COMMA SPLICE
We cannot "stick" two independent clauses together with nothing more than a comma.
Doing so is called a "comma splice."
That comma splice is easier to see when we insert the option into the sentence, this way:
Out of the nine hummingbird species found in Chile, the green-backed firecrown is the most widely distributed, its range extends from north-central Chile to southernmost South America.The part before the comma is an independent clause. The part after the comma is an independent clause. Not okay.
(We can join two full sentences with: 1) COMMA + AND or 2) a semicolon or 3) a period.)
ELIMINATE B
Quote:
C) its range
that extends from north-central Chile to southernmost South America.
• nonsensical
The words
that extends modify range, but—what is this whole group of words supposed to be doing?
It is not a modifier.
The noun
range does not itself have a verb. (The lone working verb,
extends, is eaten up by the pronoun
that.)
But if
range did have a verb such as
extends, we would have the same problem as that in option B.
Whatever comes after the comma is nonsensical.
ELIMINATE C
Quote:
D) its range extending from north-central Chile to southernmost South America.
• Correct.
This modifier describes the bird and does not create any comma splices or nonsensical meaning.
KEEP
Quote:
E)
their range extends from north-central Chile to southernmost South America.
• noun/pronoun disagreement
→ the singular noun
green-backed firecrown does not agree with the plural pronoun
their• comma splice—just as is the case in option B, except that
its has been replaced by
their.ELIMINATE E
Out of the nine hummingbird species found in Chile, the green-backed firecrown is the most widely distributed, their range extends from north-central Chile to southernmost South America.The answer is D.COMMENTSThese answers are terrific.
Nice work!
Kudos to all.