An important function of food involving the formation and repair of new tissues is –

Correct option is A

The Body Building function of food refers to its role in the formation, growth, and repair of tissues. Proteins, vitamins, and minerals are essential for the development of muscles, bones, and other tissues.
Information Booster: The Body Building function of food is vital for growth, healing, and maintaining the body’s structure. Proteins, for example, are composed of amino acids that are used to build and repair tissues. Nutrients like calcium (for bone health) and iron (for blood health) also play significant roles in tissue repair.
Additional Knowledge:
· Protective (Option b) function is primarily concerned with immunity, involving nutrients like Vitamin C and Vitamin A.
· Regulatory (Option c) function includes maintaining internal balance, such as hydration, digestion, and metabolic processes, involving nutrients like water and fiber.
· Psychological (Option d) focuses on how food can affect mood and mental states, often due to the presence of certain nutrients but unrelated to physical tissue formation.