To melt is to become liquid.
To become solid is to solidify.
The correct answer is Hamlet reacts with his heart and does not clearly think through situations.
He is deeply emotional character. He claims to carry out revenge on his father`s death in the Act I, but he suffers to do so for many weeks, even month. So, it shows that he lives by his heart and doesn`t think through all the situation.
Also, he suffers to express his love for Ophelia as he is too emerged with revenge of his father`s death.
Sentence C as there is no punctuation separating the two clauses.