“Students” would be considered a noun
The appropriate interrogative pronoun that should be used to complete the sentence is the word "whom". The sentence would be: Whom did you say about my work? We used whom because it indicates that the action is done to the speaker. In other words, whom is used when the verb is done by the object.
The correct answer is C. Cabinet members.
The executive department is composed of the president and the cabinet members. On the other hand, members of congress and senators are part of the Legislative department. The other department is called judicial. Appointed CEO's are not part of any department.
An excuse can be flimsy. All of the others are nouns so...