In this options below we need to critically check them one after the other so we can get a better idea of how it'd be.

In Option A - INCORRECT. We have a situation where the writer's opinion on the question is what's written in the original question without proper analysis. It doesn't give us the necessary insight as to how to answer questions logically.

From Option B - INCORRECT. The solution here lacks grammatical correctness in that the ''child'' should bear a possessive mark of apostrophe to show whom is being talked about with the skills so to say.

In Option C - INCORRECT.This statement doesn't show that the conference has been held. The use of the preposition ''to'' shows that it is a supposition. It appears like an arrangement made for the future.

From Option D - INCORRECT. We can notice a slight change in the sentence formation which would have been correct too but for the inexcusable use of a singular verb ''is'' during the course of enumeration of the active parts of the sentence. You don't even mention Skills and use the verb ''is'', it's an offence.

Let's look further to Option E - CORRECT, as to get what it has to offer too. This doesn't appear as a supposed statement because all its part are in agreement with the integrity of the argument. It is the most appropriate here.