According to Maslow's hierarchy-of-needs theory, the need for SELF ACTUALIZATION refers to an individual's desire to fulfill his or her potential.
Answer: a. 1. Correlation
2. Mediating variables:
b. 1 Causation
2. Mediating variables:
c. 1. Correlation
2. Moderating variables:
Explanation:
I think maybe there were some options that you didn't copy?
Else I can say that a letter written at the time of a historical event would be a primary source - as opposed to a secondary source which is written well after the relevant event.