What I normally do in cases where the whole or most of the sentence is underlined is:
1. Identify any parallelism that exists
2. Identify the pronouns and the nouns that it points to
3. Identify the noun/pronoun verb agreement
4. Understand what the sentence is trying to convey
Then I rule out options based on the above 4 rules in that order. It really doesn't take much time. At worst I will have 2 options left but with enough time at hand

Hope it helps