What is NREGA?

Explanation: National Rural Employment Guarantee Act is a social security scheme which aims to provide livelihood, sustenance, and employment to the rural communities and laborers in India. Later it is renamed as MGNREGA (Mahatma Gandhi National Rural Employment Guarantee Act). This act is passed on August 2005.

Final Answer: Hence, the correct option is C i.e, A social security scheme that aims to provide livelihood, sustenance and employment to the rural communities and labourers in India