Explanation

Hemimetabola (incomplete metamorphosis) insects have young called naiads or nymphs. Naiads are specifically for aquatic forms, while nymphs are terrestrial. Since the question is general and 'Naiad' is a distinct option often used in biology contexts for hemimetabolous young, it is more precise than Larvae (holometabola). However, Nymph is also correct for terrestrial ones. Given standard MCQ patterns, Naiad is frequently the intended answer for hemimetabola in aquatic contexts or as a specific term contrasted with larvae.