4. The formation of an ionic bond involves the a. transfer of electrons.
b. transfer of neutrons.
c.
transfer of protons.
d. sharing of electrons.

The formation of Ionic bond involves Transfer of electrons.

Correct answer is A.) transfer of electrons

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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.