Bunuel
Tsunami-related property damage rose 3.1 percent in the 12 months that ended in March, considerably
more than it did in the previous year.
(A) more than it did
(B) more than they did
(C) more than it was
(D) greater than
(E) greater than it was
OFFICIAL EXPLANATION
A
In the underlined portion, "it" is an abbreviation for "tsunami-related property damage" and "did" is shorthand for "rose", so the underlined portion needs to communicate, "more than property damage rose". That's correct: "considerably more than property damage rose in the previous year".
Go through the other four answers to find the errors: (B) uses "they" instead of "it" to refer to the singular "property damage". (C) and (E) use "was" instead of "did", while "did" is correct in representing an active verb. (D) has no subject, making it unclear what is greater than in the previous year. Choice (A) is correct.