Correct Answer: Option A

Explanation

Have is both a verb and a noun used with a past participle to form the perfect, pluperfect, and future perfect tenses, and the conditional mood. In the the question, the verb ''attracted'' shows it's in past tense.

Has is a 3rd person singular present indicative of have. 

it therefore safe to say; ''The quality of your questions which have always attracted attention has never been in doubt.'' is correct

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