<prompt> Most commonly used blinding technique in epidemiological studiesSingle blindingTriple blindingDouble blindingNone of the above  <response>: BlindingThe blinding is used to prevent outcomes from being influenced by the bias. Blinding is a basic tool to prevent concious as well as subconcious bias in the study.To blind a person involved in the study subject, investigator or observer is to prevent them from knowing certain information about the study 