Randomized controlled trials are which type of research?

The correct answer to this open question is the following.

Randomized controlled trials are considered to be the gold standard of study design because they determine casualty, to approximate a controlled experiment, to reduce bias and confounding variables and because it is statistically efficient.

A randomized controlled trial is the kind of study that randomly chooses the participants in a group that is controlled. The outcome of the variable of the study is the expected difference in the study.

explanation:

actually, not all representation was acceptable based on this little piece of article, in 1776, the second continental congress issued the declaration of independence, stating their specific grievances with the british monarchy and why they were going to create a separate government. after the colonies separated from the british monarchy and formed the united states of america, they had to answer some crucial questions: 1) if not a monarchy, what type of government was the united states going to have? 2) what kind of government was going to protect the people without violating their individual liberties?

buildings sir and respect