(a). Operation Sankalp
(b). Operation Maitri
(c). Operation Sadbhavana
(d). Operation Madad
Explanation:
Operation Sadbhavana: This is a well-known program in India where the Army works on improving the social and economic conditions of people in remote locations. They address basic needs through various initiatives like building schools, infrastructure development, and educational programs.
Operation Sankalp: Launched by the Indian Navy, this operation safeguards the security of the maritime domain in regions like the Persian Gulf and the Gulf of Oman.
Operation Maitri: This refers to humanitarian assistance and disaster relief missions undertaken by the Indian Armed Forces. A well-known example is their aid to Nepal after the 2015 earthquake.
Operation Madad: Similar to Operation Maitri, this is the Indian Navy's specific effort to provide humanitarian assistance and disaster relief during natural calamities, both in India and neighboring countries.
Therefore, the correct answer is Option (c).