Answer:
a. People make decisions rationally and logically
Explanation:
1. The researchers use Classical Model of Decision Making since, the US FDA researches the drugs based on the complete information and they will be held responsible for the actual and counter effects of the drug. Hence they will have to have the complete information in order to test the drug, which will be made available in the Classical Model.
2. The classical model of decision making is based on economic assumptions and its fundamental underlying assumption is that people make decisions rationally and logically.