What is a key characteristic of a randomized controlled trial (RCT)?
A.
Participants are randomly assigned to treatment or control groups
B.
Studies are conducted in a laboratory setting
C.
Researchers are blinded to participant groups
D.
Participants are selected based on specific criteria
Correct Answer: Option A
Explanation
RCTs involve randomly assigning participants to treatment or control groups, minimizing bias and ensuring that groups are comparable. This design
helps establish cause-and-effect relationships between interventions and outcomes.
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