Answer: d. The king has the potential to make his subjects happy.
Step-by-step explanation:
The poem, "To the King's Most Excellent Majesty" by Phillip Wheatley was written in 1768 to praise the English King George and to pray to God for his welfare.
The poem ends by saying that a Monarch's smile can set his people free which means that the King has the potential to make his people happy if he were to be gracious to them.