Read the sentence to find out whether there is any grammatical or idiomatic error in it. The error, if any, will be in one part of the sentence. The corresponding letter of that part is the answer. If the given sentence is correct as it is, then choose option ‘No error’ as the answer response. (Ignore errors of punctuation, if any).

It's high time we address (A)/ the environmental issues affecting (B)/our community and took meaningful (C)/ steps towards sustainability (D).

Correct option is A

The error lies in part (A).
The issue in this part is a verb tense agreement error. When you use the phrase "It's high time," it indicates that something should have happened in the past, and it's overdue in the present. Therefore, you should use the past tense verb form after this phrase.
Here's the corrected sentence:
"It's high time we addressed the environmental issues affecting our community and took meaningful steps towards sustainability."
So, the grammatically correct sentence should have "addressed" (past tense) instead of "address" (present tense) in part (A).