Trophamnion is found in which type of reproduction?

Answer: Option A

Trophamnion is found in Polyembryony type of reproduction.
Polyembryony is the phenomenon of two or more embryos developing from a single fertilized egg. Due to the embryos resulting from the same egg, the embryos are identical to one another but are genetically diverse from the parents.
Trophamnion is a nutritive sheath that sometimes invests the embryonic portion of the insect egg especially in polyembryonic insects. It is a giant unicellular provisory structure derived from the second polar body and performs both protective and digestive functions.