Meaning: 'Specific' means clearly defined or identified, indicating that the policy has distinct features.

Wrong options:

• declaration: The term 'declaration' is a noun that does not fit grammatically as it cannot modify 'policy' directly.
• blatant: 'Blatant' is an adjective that means obvious or conspicuous, but it does not accurately describe the nature of the policy in this context.
• rooted: 'Rooted' is the correct answer for a different blank and does not fit here as it does not describe the type of policy.
• associated: 'Associated' is also an adjective but does not describe the nature of the policy itself; it relates to a different context.
• disturb: 'Disturb' is a verb that does not fit grammatically or contextually as it does not describe a type of policy.
• levy: 'Levy' is a verb that refers to imposing a tax or duty, which does not apply to the description of the policy.

Correct answer: rooted

Explanation: The term 'rooted' is a past participle used here as an adjective to indicate that the policy has its origins in the most-favored-nation clause. It fits grammatically and contextually as it describes the foundational aspect of the policy.

Meaning: 'Rooted' means established or grounded in something, indicating the historical basis of the policy.

Wrong options:

• declaration: 'Declaration' is a noun and does not fit grammatically as it cannot describe the origins of a policy.
• blatant: 'Blatant' is an adjective that does not relate to the historical context of the policy's origins.
• specific: 'Specific' is the correct answer for a different blank and does not fit here as it does not describe the origins of the policy.
• associated: 'Associated' is an adjective that indicates a connection but does not describe the foundational aspect of the policy.
• disturb: 'Disturb' is a verb that does not fit in this context as it does not relate to the origins of a policy.
• levy: 'Levy' is a verb that refers to imposing a tax or duty, which does not apply to the historical context of the policy.

Correct answer: associated

Explanation: The word 'associated' serves as an adjective that describes the relationship between the Open Door policy and China. It fits grammatically as it modifies the subject and contextually indicates that the policy is commonly linked with China.

Meaning: 'Associated' means connected or related to something, indicating the common perception of the policy's relationship with China.

Wrong options:

• declaration: 'Declaration' is a noun and does not fit grammatically as it cannot describe the relationship of the policy.
• blatant: 'Blatant' is an adjective that does not accurately describe the relationship between the policy and China.
• rooted: 'Rooted' is the correct answer for a different blank and does not fit here as it does not describe the relationship of the policy.
• specific: 'Specific' is an adjective that does not relate to the association of the policy with China.
• disturb: 'Disturb' is a verb that does not fit grammatically or contextually as it does not describe a relationship.
• levy: 'Levy' is a verb that refers to imposing a tax or duty, which does not apply to the context of association.

Correct answer: levy

Explanation: The term 'levy' is a verb that means to impose or collect a tax or duty. It fits grammatically as it serves as the action in the sentence and contextually indicates the prohibition of imposing preferential duties in the Congo basin.

Meaning: 'Levy' means to impose or collect, particularly in the context of taxes or duties.

Wrong options:

• declaration: 'Declaration' is a noun that does not fit grammatically as it cannot serve as an action in this context.
• blatant: 'Blatant' is an adjective that does not fit as it does not describe an action related to duties.
• rooted: 'Rooted' is the correct answer for a different blank and does not fit here as it does not describe an action.
• specific: 'Specific' is an adjective that does not relate to the action of imposing duties.
• associated: 'Associated' is an adjective that does not describe an action and cannot fit in this context.
• disturb: 'Disturb' is a verb that means to interfere with or disrupt, which does not apply to the context of imposing duties.