Answer:
D. Pernicious
Step-by-step explanation:
The Tragedy of Macbeth is a tragedy written by William Shakespeare. It tells about a Scottish general Macbeth, who receives a prophecy from three witches. According to the prophecy, he will become king of Scotland. Spurred by his ambition and wife, Macbeth murders Duncan, takes over the throne, and rules as a tyrant. He slaughters many, including Macduff's family. Macduff reaches out to Malcolm, Duncan's son who had fled to England, and they gather an army consisting of Scottish and English forces and end Macbeth's reign.
Based on this information, we can conclude that the word Macduff and Malcolm would use to describe Macbeth's rule is pernicious. When something is pernicious, it has a harmful effect (on something).
The rest of the words don't fit at all. The adjective judicious refers to something that shows or is done with good judgment. The adjective sundry means of various kinds, and when someone is credulous, they are too ready to believe that something is true.
This is why option D is the correct one.