The use of existing information in books, articles, and electronic databases is known as Group of answer choices Primary research Qualitative research Summative research Secondary research

Secondary research  

Explanation:

Secondary research involves using already existing data, like what can be found in in books, articles, and electronic databases.

A is wrong. Primary research is the research that you do to obtain new information, as in experiments or in interviews and surveys.

B is wrong. Qualitative research is the gathering of non-numerical data.

C is wrong. Summative research is done at the end of a project to determine its success. It can also point the way to future research projects.

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.