Topic: Interchange of Parts of Speech,

Best Answer Explained in Below-:

The question asks for the verb form related to the noun "master." In English, a verb is a word that describes an action, occurrence, or state of being. "Master" as a noun usually refers to someone who has control, authority, or skill in a particular area. However, "master" can also function as a verb, meaning to gain proficiency or control over something. For instance, when someone "masters" a skill, they practice and become highly skilled or knowledgeable in that area.

Considering the options provided:

A) "Mister" is a title and has no verbal relation to "master."
B) "Mistrees" seems to be a typographical error for "mistress," which refers to a female master or a term for a woman in authority, but still is not a verb.
C) "Mastery" is a noun that describes the state of being a master, but it does not function as a verb.

Thus, the correct choice is D) "Master," which appropriately serves both as a noun and a verb. It encapsulates the action of mastering, making it the only suitable answer in this context.