What is the best evidence that the speaker's wrath has serve consequences?

D. The fact that his foe has apparently been killed in the end.

Explanation:

William Blake's "A Poison Tree" is a short four-lined poem of four stanzas that talks about the evils of hatred. The poem presents two cases of hatred- one against a good friend and another against a foe.

The speaker reveals that the hatred that he had against his friend was resolved when he told that friend about it. On the other hand, the "wrath" that he had against his foe went unresolved when he did not tell him about it. And the consequence of this wrath was 'fruitful' for the speaker when the speaker revealed that his foe lay "outstretched beneath the tree", suggestive of that person's death.

Thus, the correct answer is option D.

the use of “as” in the example to draw the resemblance. some more examples of common similes are given below. common examples of simile. our soldiers are as brave as lions. her cheeks are red like a rose. he is as funny as a monkey. the water well was as dry as a bone. he is as cunning as a fox. simile introduces vividness into what we say.