The answer to this question

Hey there!

Oxygen needs two bonds to have a valence orbital of s²p⁶.

In a hexanal molecule, oxygen has a double bond with one carbon atom.

A double bond is when two pairs of electrons are being shared.

So your answer is b. 2.

Hope this helps!  

beta decay is the answer

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.