The correct option is C Maize
Caryopsis is a type of simple dry fruit one that is monocarpellate (formed from a single carpel) and indehiscent (not opening at maturity) and resembles an achene, except that in a caryopsis the pericarp is fused with the thin seed coat. The caryopsis is popularly called as a grain and is the fruit typical of the family Poaceae (or Gramineae) which includes wheat, rice and corn. Tomato and brinjal are berries. Mango fruit is a drupe.
Therefore, the correct answer is option C.