What factors are most important when deciding what information to use?

A. It must agree with your ideas and be from secondary data.

B. It must agree with your ideas and be reliable.

C. It must be unbiased and verifiable.

D. It must be verifiable and from primary data.

C is the correct answer.

the information must always be verifiable, but it can still be secondary data rather than primary.

Answer: C. It must be unbiased and verifiable.

Explanation:

The information which is unbiased and verifiable can be considered as most important when deciding it's use. This is because of the fact that the biased information may be generated by manipulation, can be inaccurate or unreliable. The information should be verifiable which means it can be rectified using several sources and experimental trials.