In the sentence, identify the segment which contains the grammatical error. I tried taking tablets for the headache, but they did not have any affect.

The grammatical error of the sentence is in option B. “Affect” is a verb that means to have an influence on someone or something or to cause a change in someone or something. For example, Both buildings were badly affected by the fire. The divorce affected every aspect of her life. “Effect” is a noun that means the result of a particular influence.  For example: I think I’m suffering from the effects of too little sleep. In the given sentence, a noun is needed in place of a verb, and the verb is already mentioned. In order to make the sentence correct, replace “affect” with “effect”. Correct sentence: ‘I tried taking tablets for the headache, but they did not have any effect.’