Explanation:

- Assertion refers to the act of confidently stating or maintaining something as true or having authority. In the context of the sentence, it suggests a strong claim or declaration by local landlords.

- Option 1: Insistence – This also implies a firm assertion or demand, similar in nature to the original word.

- Option 2: Averment – This means to assert or affirm with confidence, making it synonymous with assertion, not opposite.

- Option 3: Statement – This refers to expressing something in words. It's neutral and doesn't directly oppose assertion.

- Option 4: Denial – This involves refusing to accept as true or asserting the opposite of a statement, making it the opposite of assertion.