Nymph is the name of young one of A. butterfly B. beetle C. housefly D. cockroach

The correct answer is: C. housefly

A nymph is the young form of an insect that undergoes incomplete metamorphosis. This means that the nymph does not have a pupal stage, but instead goes through a series of molts as it grows. The nymphs of houseflies are called larvae. They are small, white, legless creatures that live in decaying organic matter. The larvae feed on bacteria and other microorganisms, and they grow rapidly. After about 12 days, the larvae pupate. The pupa is a hard, protective case that encloses the insect as it undergoes metamorphosis. After about 5 days, the adult housefly emerges from the pupa.

The other options are incorrect because the young forms of these insects undergo complete metamorphosis. This means that the young insect, called a larva, goes through a series of changes as it grows. The larva eventually forms a pupa, which is a hard, protective case. Inside the pupa, the insect undergoes a dramatic transformation, emerging as an adult insect.

• Butterfly larvae are called caterpillars. Caterpillars are soft-bodied, worm-like creatures that have six legs and a pair of fleshy prolegs on each abdominal segment. Caterpillars feed on plants, and they grow rapidly. After about 40 days, the caterpillar forms a pupa. The pupa is a hard, protective case that encloses the insect as it undergoes metamorphosis. After about 10 days, the adult butterfly emerges from the pupa.
• Beetle larvae are called grubs. Grubs are soft-bodied, worm-like creatures that have six legs and a pair of fleshy prolegs on each abdominal segment. Grubs feed on decaying organic matter, and they grow rapidly. After about 30 days, the grub forms a pupa. The pupa is a hard, protective case that encloses the insect as it undergoes metamorphosis. After about 10 days, the adult beetle emerges from the pupa.
• Cockroach larvae are called nymphs. Nymphs are small, wingless creatures that resemble adults. Nymphs grow by molting, and they undergo a series of molts as they grow. After about 6 months, the adult cockroach emerges from the last nymphal stage.