A life insurance policy becomes incontestable after it has been in force for:

Comprehensive and Detailed Step by Step Explanation:Theincontestability clauseprevents insurers from voiding a policy after a specified period, except in cases of fraud or non-payment of premiums:

2 years (C):Maryland law mandates a maximum incontestability period of two years. After this period, the insurer cannot deny claims due to misstatements on the application.

30 days (A) and 6 months (B):Too short for standard incontestability clauses.

3 years (D):Exceeds the Maryland limit.

References:Maryland Insurance Article §16-203, Incontestability Clause Guidelines, and COMAR 31.09.09.