<prompt> Causative agent of acute rheumatic fever -Group A b-hemolytic streptococcusGroup-B b-hemolytic streptococcusGroup-C b-hemolytic streptococcusGroup-D b-hemolytic streptococcus  <response>: Ans. is a i.e., Group A p-hemolytic streptococcus o Acute rheumatic fever is caused by streptococcus pyogenes - group-A Beta hemolytic streptococcus. 