What are the stages of gradual metamorphosis?

The stages of gradual metamorphosis consist of Egg, Nymph, and Adult. This process is typical in certain insects, such as grasshoppers and cockroaches, where there is no distinct pupal stage. Instead, after the egg hatches, the insect emerges as a nymph. The nymph resembles a smaller version of the adult but has not yet reached maturity. As the nymph molts and grows, it gradually develops into the adult form, eventually reaching full size and reproductive capability.

The other options include stages that belong to different types of metamorphosis. For instance, the second option outlines complete metamorphosis, where the insect transitions through distinct larval and pupal stages. The third option also describes a phase of complete metamorphosis, lacking the nymph stage that is characteristic of gradual metamorphosis. The fourth option wrongly includes "Larvae," a term associated with complete metamorphosis, instead of "Nymph," which is essential to the gradual process.