please tell fast as soon as possible

Answers
Answer:
a) the power of the president to refuse to approve the bill or joint resolution and thus prevent its enactment into law it is called veto
Answer:
Answer is written in the explanation section.
Explanation:
1. Veto: Veto is a constitutional right which rejects a decision or a proposal which is made by a lawmaking body. In political context it usually refers to the power of a chief executive who complicate the way of a legislative bill by refusing to sign it and transform into law. This power belongs to the President of a country.
2. UNICEF: UNICEF or the United Nations Children's Fund is an United Nations agency who is responsible for providing developmental and humanitarian aid to children who belongs to worldwide. UNICEF works in the world’s most toughest places to be available to the most disadvantaged children to protect the rights of every child and everywhere.