Answer :
Serving a ceremonial role by symbolic representing all Americans interests- this function of president has been described in U.S constitution.
Option:B
Explanation:
According to U.S constitution president plays a ceremonial role in government. All works are mainly done by different segregated responsible authority. President is the ceremonial head who symbolically represent all Americans interests before country.
The main part of discussion in article II of the U.S constitution is the power distribution among all the branches of ruling authority and executive branch has the main power of taking all relevant decision of government for the welfare of society.