I think it’s C or D. C is more specific. D is saying all of the above which is true, but I don’t think that would be the answer. Since it says to fill up your paper. But it’s your decision
"I" is the one word among the following choices given in the question that represents the <span>subject of this sentence. The correct option among all the options that are given in the question is the fourth option or option "d". I hope that this is the answer that has actually come to your desired help.</span>