Even if you know a lot about your speech topic, you should still do research in order to discover interesting facts and perspectives you may not have been aware of

Compared to proximity-prone mini-mics, transparent mini-mics:

a. have a more open and natural sound. b. tend to add presence to close dialogue. c. reject background sound. d. are directional.

Deal and Kennedy's "strong culture" exemplifies a _______________ prescriptive approach to cultural analysis.  

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