The answer is D- Chief Justice is not a role of the President.
Among the many of the duties of a president there are
1. Chief of State
In this role his responsabilities include to represent and embody all the values of his/her country.
2. Chief Executive
The president is top authority of the Executive Branch. He/she enforces the laws passed by Congress
3 -Commander-In-Chief
The president is in charge of all Armed Forces. He/ she decides over all military operations
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