(A) Keratin

Hair is primarily composed of a protein called keratin. Keratin is a fibrous structural protein that forms the main component of hair, as well as nails and the outer layer of the skin. It provides strength and resilience to these structures. The other options—Casein, Globulin, and Mucin—are proteins found in other parts of the body and have different functions.

Answer: A) Chloroplasts Explanation: Chloroplasts contains chlorophyll, the green substance in plants that allows them to create food from carbon dioxide and water called as photosynthesis.

The concept of "Total Revolution" is associated with Jayaprakash Narayan (JP). Jayaprakash Narayan, a prominent Indian independence activist and later a political leader, introduced the idea of Total Revolution during the 1970s. He called for a comprehensive and non-violent revolution that would address not only political issues but also social, economic, and moral concerns. JP advocated for a transformation of the entire system to bring about positive changes in various aspects of life in India.