The correct answer is C. Reviewing insurance policy applications for irregularities, inconsistencies, and missing information before coverage is granted is an effective preventive control. Many insurance fraud schemes begin at the application or underwriting stage through false statements, omitted risk factors, fictitious policies, or misrepresentations about the insured. Careful pre-issuance review helps identify suspicious information before the insurer assumes risk. Option A is generally impractical and may raise privacy and legal concerns after claim payment. Option B is inappropriate because combining underwriting and claims processing in one person weakens segregation of duties. Option D is also poor practice because information sharing, where lawful and appropriate, can help insurers identify patterns, duplicate claims, and suspicious applicants. Strong underwriting controls are essential to fraud prevention.

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