Explanation
Solution
Correct Option: 4 (is)
The "Along With" Rule
In English grammar, when the subject is connected to another noun using phrases like "along with," "together with," "as well as," or "in addition to," the verb must agree only with the first subject.
Since "The instructor" is singular, we must use the singular verb "is".
Logic Comparison
-
Case A (using "and"): If the sentence was "The instructor and the class...", the subject would be plural, and we would use "are".
-
Case B (using "along with"): The phrase "along with the class" acts as extra information (parenthetical). If you remove it, the sentence "The instructor is angry" still makes sense.
Final Sentence: The instructor, along with the class, is angry about the room change.