Which best describes the role of a primary consumer in a food web? Carnivore that feeds on producers Herbivore that feeds on producers Herbivore that feeds on primary consumers Carnivore that feeds on primary consumers

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.