The answer is D: liberalization.
Explanation for each option:
A. Two or more coverage parts - This is a key component of a Commercial Package Policy (CPP). A CPP is designed to combine multiple types of insurance coverage into one policy, and it must include at least two coverage parts, such as property and liability.
B. Interline endorsement - This is also a key component of a CPP. Interline endorsements are used to apply common terms or conditions across multiple coverage parts within the CPP, ensuring consistency and reducing redundancy.
C. Common Policy condition - This is another key component of a CPP. Common policy conditions are standard terms and conditions that apply to all coverage parts within the CPP, such as cancellation terms and policyholder responsibilities.
D. Liberalization - This is not a key component of a CPP. Liberalization is a policy provision that allows for the broadening of coverage without additional premium if the insurer adopts a revision that would benefit the policyholder. While it can be a feature in insurance policies, it is not a required component of a CPP.
In summary, option D, liberalization, is not a key component of a Commercial Package Policy.