Why is that helium is shown here with the group ii alkali earth metals

helium is not a metal nor a non metal it's a noble gas

Explanation:

11 players on a field that has a maximum of 11 players

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.