The correct answer is (c), Section 136.
Section 136 of the Indian Penal Code states that whoever harbours a deserter from the Army, Navy or Air Force, knowing or having reason to believe that he is a deserter, shall be punished with imprisonment of either description for a term which may extend to two years, or with fine, or with both.
A deserter is a person who leaves his or her post without permission and without the intention of returning. Desertion is a serious offence in the military, and those who are caught deserting can face severe penalties.
Section 136 of the Indian Penal Code is designed to deter people from harbouring deserters. By making it a crime to harbour a deserter, the law aims to ensure that deserters are not able to evade justice and that they are returned to their units to face the consequences of their actions.
The other options are incorrect because they do not relate to the offence of harbouring a deserter. Section 131 of the Indian Penal Code deals with the offence of abetment of mutiny, Section 135 deals with the offence of abetment of treason, and Section 137 deals with the offence of abetment of waging war against the Government of India.