When researchers are using primary source materials, they must determine that the material is accurate and reliable as a data source. What is this process called?

Alexander Hamilton proposed ______.

a. a weak president that would serve for unlimited one-year terms b. a strong president that would serve for a single term of four years c. a weak president that would serve for up to ten years d. a strong president that would serve for life

If experimentation is used to try to ascertain the utility of a program, the danger that the ______ will influence the results due to people acting differently to the announced experiments becomes an important consideration.

Fill in the blank(s) with the appropriate word(s).