<prompt> Which among the following is a mode of primary prevention?Pap smear collectionMarriage counsellingBreast examinationRehabilitation  <response>: Since marriage counselling is a form of health education it is a mode of primary prevention. Both pap smear collection and breast examination is a mode of secondary prevention as the disease has already occurred and rehabilitation is a teiary mode of prevention. Ref: Park, Edition - 21, Page - 39 