Final answer:
In cases of deliberate concealment, the insurer may deny the entire claim and cancel the policy due to the fraudulent nature of nondisclosure or misrepresentation by the insured.
Step-by-step explanation:
When deliberate concealment is committed by the insured in insurance or contract law, the insurer is entitled to deny the entire claim. This is because nondisclosure or misrepresentation of material facts can be considered fraud, which violates the terms of the insurance contract. As a result, the insurer has the right to cancel the policy and can also potentially take legal action for fraud, although this is not necessarily an automatic step and would depend on the specifics of the situation.