Question

question 1 of 10
a pharmaceutical company asks 30 patients with acne to volunteer for an experiment in which they will receive treatment with either a special medical lotion or normal moisturizing cream. what type of experimental design is being used?
a. a general population survey
b. in vitro observation
c. a clinical trial
d. a geographical cohort study

Explanation:

A clinical trial involves testing treatments on human subjects. Here, a pharmaceutical company is testing a special medical lotion against a normal moisturizing cream on acne - patients, which is characteristic of a clinical trial. A general population survey is about gathering data from the general public, not focused on treatment testing. In - vitro observation is done outside of a living organism, usually in a test - tube or petri - dish. A geographical cohort study focuses on a group of people in a particular geographical area over time, which is not the case here.

Answer:

C. A clinical trial