The p K a of lactic acid is 3.86 , and its conjugate base is lactate. Which form of lactic acid predominates at pH 7.4 ?

im smart but only 5 and am not good a chmeical and math questions

Explanation:

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.