The nearest approach to pure exponential growth is found in
As the insect approaches adulthood, the various changes that occur in its form is referred to as metamorphosis. In complete metamorphosis, the immature insects and the adult are different forms. The insects have different forms as: egg, nymph, larva and pupa. As the stages are different, so the exponential growth can be distinctly approached in insect larvae.
Thus, the correct answer is option (C), 'Larvae of insects in which complete metamorphosis takes place'.