19. As it is used in (the sentence), the highlighted phrase stumbled across most nearly means:

Answer and Explanation

Your Answer is

Correct Answer is A

Explanation

According to L56, in this sentence, it means that I arrived at or found out the house where Stevenson briefly lived.

A item: stumble across: I accidentally found that this meaning is the most suitable in the context of the article, so choose A.

Item B: staggered toward, this paragraph does not reflect that the author is staggering, so don't choose it.

Item C: The meaning of unearth mining does not match, so exclude it.

D item: trip over stumbles, the meaning does not match, exclude.