A Randomized Controlled Trial (RCT) is a scientific study designed to evaluate the effectiveness of a treatment or intervention. In an RCT, participants are randomly assigned to either a treatment group, which receives the intervention, or a control group, which does not. This randomization helps eliminate bias and ensures that the groups are comparable. The results of an RCT can provide strong evidence about the causal effects of the intervention being tested. By comparing outcomes between the treatment and control groups, researchers can determine whether the intervention leads to significant improvements in health, behavior, or other measured outcomes.