Find out whether there is any grammatical error in below sentence.
Generally, people have not receptive / and fail to notice the / irrelevant answers they / get for straight questions.

The grammatical error is in the phrase "have not receptive". The word "receptive" is an adjective, but it is used incorrectly here. The correct form should be the adjective "receptive" followed by the preposition "to", forming the phrase "receptive to". Therefore, the correct phrase should be "have not been receptive to".

So, the correct sentence should be:
Generally, people have not been receptive to

Therefore, the grammatically correct version of the sentence is obtained by replacing Option A with the corrected phrase.