Official Solution:
The birds have started considering the corner of the park a much safer place than the riverside; their numbers there are now much more than before.
A. a much safer place than the riverside; their numbers there are now much more
B. as a much safer place than the riverside; their numbers there are now much greater
C. to be a much safer place than the riverside; their numbers there are now much more
D. a much safer place than the riverside; their numbers there are now much greater
E. to be a much safer place than the riverside; the number of them there are now much greater
The question tests the following issues:
Issue 1: Idiomatic use of the word “consider”.
Wrong: Consider A as B ( I consider you as my friend).
Questionable: Consider A to be B (I consider you to be my friend).
Right: Consider A B ( I consider you my friend).
Issue 2: The plural “numbers” means a large crowd or multitude, while the singular “number” refers to a specific quantity of individuals. Therefore when the word “numbers” is used for comparison, “greater than” must be used instead of the “more than” - the latter may wrongly indicate that the quantity of numbers is larger and not that the quantity of the birds is larger.
A. Wrong because of issue 2: Using “more than” instead of “greater than” wrongly implies that there are more
numbers rather than more
birds.
B. Wrong because of issue 1: “Consider A as B” is wrong.
C. Wrong because of issue 2 as explained in A above. Moreover the idiom “consider A to be B” is questionable -. better is “consider A B”.
D. CORRECT.
Issue 1 is correct addressed: “Consider A B”; A = corner of the park, B = a much safer place.
Issue 2: The construction “their numbers..… greater than…” is proper.
E. “The number of…….” is singular and must use a singular verb. Here the plural verb “are” is wrongly used. Moreover the idiom “consider A to be B” is questionable -. better is “consider A B”.
Answer: D