• Collocation: In English, a collocation is a pair or group of words that are habitually used together. The most common and natural way to describe something told with a lot of specific information is the phrase "in great detail."
Contextual Fit: While "elaborate" (Option A) is a synonym for detailed, the structure of the sentence is "in [adjective] detail." We say "an elaborate description" but we say "described in great detail."