In the following question, a sentence is given with a part highlighted. Choose the option that gives the correct replacement of the highlighted portion and makes the sentence grammatically and contextually meaningful.

If you have a tendency to squint when you read, you might need glasses.

Correct option is B

“Might” is used in a case of past perfect tense, while “may” is used for present tense. As the sentence states a general truth, the tense is present, and “may” must be used instead of “might”. No other options give the required correction and thus any variations in those options are thus redundant.