“To His Coy Mistress” is actually a poem that was written by Andrew Marvell, an author and a politician as well. This poem is spoken by a nameless man and dedicates this poem to a nameless woman as well. Therefore, I can say that the word that best describes the tone of this poem is longing. It would be the last option. Hope this helps.
He's telling her that if they had enough time , they could sit down and think about her coyness. But since time flies by fast, and her beauty will be no more- she'll be in a marble vault. - he's coaxing her to be with him.
