What are chemical properties of ionic compounds

They form crystals, they have really high boiling points,  They have higher  enthalpies  of fusion  and vaporize than an molecular compound, the are brittle

Explanation:

if you need any more help let me know, Im mia :)

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.