Question

insoluble has the same or almost the same meaning as:
inexplicable
innocent
inconsiderate
innovative

Explanation:

"Insoluble" means unable to be solved or dissolved. "Inexplicable" means unable to be explained. They share the sense of being difficult or impossible to deal with in a certain way. The other words have different meanings: "innocent" relates to being free from guilt; "inconsiderate" means not thinking of others' feelings; "innovative" is about being new - creative.

Answer:

A. Inexplicable