What does it mean when an observational study is retrospective

Which type of evidence would support the author's claim?

Of the following choices, which ones are characteristics of west african society? select all that apply. a. arabic was the main language used when trading with other societies. b. christianity was the only religion practiced in villages. c. slaves had no rights and were only given specific farming tasks. d. skilled workers were a higher level in the caste system than traders. e. religious rituals encouraged the honoring of ancestors.

Hypothetically speaking, you are assigned to a committee of three to decide on a dress code for campbellsville university staff and faculty. only two of the three votes are required to pass this policy. in this situation you are one of the two agreeing to a dress code. what steps might you take to gain the cooperation of the third party after the policy has been initiated.