IMO...Strategy for bold faced question falls inline with the strategy u adopt for critical reasoning

Argument ,in general,follows some structure "Evidences, Facts, Claims,conclusion so on henceforth".

When you are attacking bold faced question, understand the role played by each sentence in relation to the bold faced sentence(vice versa).Bold face questions are difficult because answer choices coax you to pick wrong one's. So before you examine the answer choices logically establish the road map of the argument and links bold faced sentence establishes.

As Ron said in one of his posts, physically cover your screen to avoid looking at answer choices for questions such as RC/CR Main point, CR bold faced , Parallel Reasoning

Practice the above for 10-20 questions.You will see an improvement.