Which is the best example of a responsibility held by the president

Responsibilities held by the president include leading the Executive form of the government and overseeing legislative decisions.

Explanation:

The President in the Us is the head of the executive in that the President is supposed to head the functioning of and governance of the laws that are to be upheld and how they are going to be executed in the country.

The President also has say in the senate along with the house of congress in the legislature and can influence he laws that are being passed by the congress by the virtue of his veto in some of the most important decisions.