You will be none ……. for it if you take the examinations in November.
The correct answer is: D
Explanation
The complete sentence is: "You will be none the worse for it if you take the examinations in November."
The phrase "none the worse for" is a common idiom that means to not be harmed or damaged by something. This phrase, in this context, means that taking the exams in November will not make you any worse off.