I think it might be A because the part, also and ,marine is a little confusing.
The answer is B hope this helps!
Sentence provides commentary information for elaboration of a concrete detail.
D) It was a good idea to wear short sleeves and a light jacket that could be taken off easily in the afternoon.
The concrete detail:
short sleeves and a light jacket
The commentary information for elaboration of the concrete detail:
that could be taken off easily in the afternoon.
