Answer: I think it might be D.
Explanation:
It is termed as protolith; A protlithis the original unmetamorphosed rock from which given metarmorphic rock is formed
The Earth's atmosphere is mostly Nitrogen ~ 78% and Oxygen ~21% gas.
Answer: C. to seek spiritual advice
Explanation:
Minimum age of Marriage, Raising the Status of Women, Spread of Education, Adoption, Change in Social Outlook, Social Security