The correct option is B a-ii, b-iv, c-iii, d-i
Flying mammals: They are mammals that fly. They are usually nocturnal. Example: Bats, marsupial gliders, flying squirrels.
Rodents: They are gnawing animals that is, they have a large pair of incisors teeth to gnaw on hard foods. Example: Rat, squirrels etc.
Primates: They have well developed hands/feet with fingers/ toes. They can judge distance. They are very intelligent social animals and bonds with friends and family. Example: Human, gibbons, lemur etc.
Marsupials: They care for and feed their young ones in sack like structures present near their stomach (called pouch). Example: Kangaroo, koala, etc.