Final answer:
The right to negotiate treaties is NOT a presidential power explicitly granted in the Constitution.
Step-by-step explanation:
The answer to this question is d. The right to negotiate treaties. The power to negotiate treaties is explicitly granted to the President in Article II, Section 2 of the U.S. Constitution. However, the power to issue executive orders, appoint ambassadors, and grant reprieves are all presidential powers explicitly granted in the Constitution.