<prompt> The major purpose of Randomization in clinical trails is to-Facilitate double blindingHelp ensure that that study subjects are representative of general populationEnsure that the groups are comparable on baseline characteristicsReduce selection bias in allocation of treatment  <response>: Randomization ensures that the investigator has no. Control over allocation of paicipants to either study or control groups, thus eliminating what is known as selection bias. Ref: 25th edition, Parks Textbook of Preventive and Social Medicine, Page no. 90 