<prompt> Which of the following is true about case-control study?Multiple outcomes can be studiedRapid and inexpensiveLess prone to biasRisky to subjects  <response>: A case-control study is designed to help determine if an exposure is associated with an outcome i.e., disease or condition of interest. In theory, the case-control study can be described simply. First, identify the cases a group known to have the outcome and the controls a group known to be free of the outcome. Ref: 25th edition, Parks Textbook of Preventive and Social Medicine, Page no. 79 