The correct answer is (c) P. C. Chacko.
The Joint Parliamentary Committee (JPC) examining the 2G Scam was headed by P. C. Chacko, a member of the Indian National Congress (INC) from Kerala. The JPC was formed in 2011 to investigate the allocation of 2G spectrum licenses by the government of India. The JPC submitted its report in 2012, which found that there were irregularities in the allocation of the licenses and that the government had lost billions of rupees in revenue. The report also recommended that several individuals, including former Prime Minister Manmohan Singh, be prosecuted for their role in the scam.
Murali Manohar Joshi is a member of the Bharatiya Janata Party (BJP) and was the Minister of Human Resource Development from 2014 to 2018. P. Moily is a member of the INC and was the Minister of Petroleum and Natural Gas from 2012 to 2014. Sushma Swaraj is a member of the BJP and was the Minister of External Affairs from 2014 to 2018.