The correct answer is C. Molts many times to mature.
Grasshoppers go through several molts (ecdysis) during their nymph stage before they reach adulthood. The other options are not typically accurate in relation to grasshopper nymphs: A. While grasshopper nymphs may feed on a variety of plants, this statement is not specific to nymphs and can apply to adults as well. B. Nymphs are generally smaller than adults. D. Nymphs do not have fully developed wings; they develop wings as they mature into adults.