Fill in the blank with the correct option to form a meaningful sentence.

The Principal addressed us in the assembly and _____ the rumors of an early summer break.

The correct option is quashed.

Explanation:

The sentence requires a verb that fits the context of a Principal addressing rumors about an early summer break in a school assembly.

Let us analyze the meanings of the given options to see why "quashed" is the most appropriate word:

1. Quashed: To quash means to reject, void, put an end to, or suppress completely (especially a rumor, rebellion, or legal decision). In this context, "quashed the rumors" means the Principal officially denied the rumors and put an end to them.
2. Defended: To defend means to protect from harm or support in the face of criticism. A Principal would not defend rumors about an early break.
3. Cleared: While "cleared up" could mean to clarify rumors, the verb "cleared" on its own does not collocate well with rumors in this sense (one clears their throat or clears an obstacle, but "quashes" or "dispels" a rumor).
4. Rebuked: To rebuke means to express sharp disapproval or criticism of someone because of their behavior or actions. You rebuke a person, not a rumor.

Therefore, the verb quashed perfectly fits the blank to form a meaningful sentence: "The Principal addressed us in the assembly and quashed the rumors of an early summer break."