Estoppel is best described as which of the following?

• A. An equitable principle preventing a party from asserting a fact due to reliance by an innocent party.
• B. A contractual clause allowing modification of claims.
• C. A type of liability coverage.
• D. A rule governing insurer cancellations.

Answer: (A)

Estoppel is an equitable principle that prevents a party from taking a position or asserting a fact if another party reasonably relied on that party’s words or conduct to their detriment. In insurance terms, this means if the insurer leads the insured to believe they are covered or to rely on certain statements or practices, the insurer may be barred from contradicting those representations later if doing so would unfairly harm the insured. That understanding makes the description that emphasizes preventing assertion of a fact due to reliance by an innocent party the best fit. The other options describe things that aren’t about preventing inconsistent positions based on reliance: it isn’t a contractual clause that modifies claims, it isn’t a type of liability coverage, and it isn’t a rule about insurer cancellations.