The correct option is B Sorosis
The composite fruit of pineapple is sorosis. Sorosis is a fleshy fruit formed by the consolidation of many flowers with their receptacles, ovaries, etc. Synconus is also composite fruit formed from a hollow fleshy inflorescence stalk inside which a tiny flower develops. Etaerio is developed from the merge of several ovaries that were separated in a single flower. Thus the correct answer is B.