Read each sentence to find out whether there is any error in any underlined part and indicate your response in the Answer Sheet against the corresponding letter i.e., (a) or (b) or (c). If you find no error, your response should be indicated as (d).
Dr Kailasavadivoo Sivanis an Indian space scientist and the chairperson of theIndian Space Research Organization.He is the former Director ofVikram Sarabhai Space Centerand Liquid Propulsion centre.He is joinedthis position Jan2018.
________ means that the President of India can refer any matter that is of public importance or that which involves interpretation of Constitution to Supreme Court for advice.