A.I. Explanation:

Correct answer: remove

Explanation: The verb 'remove' is in the base form, which is appropriate here as it follows 'to' indicating an infinitive verb form. This fits grammatically and contextually as it describes the action of eliminating trade barriers.

Meaning: 'Remove' means to take away or eliminate something, in this case, trade barriers.

Wrong options:

• built: 'Built' is the past tense of 'build,' which does not fit here as it implies construction rather than the action of eliminating barriers.
• removed: 'Removed' is the past participle form, which does not fit the infinitive structure required after 'to.'
• build: 'Build' is also in the base form but implies creating rather than eliminating, which does not align with the context of trade barriers.
• allows: 'Allows' is in the present tense and does not fit grammatically as it does not match the infinitive form needed here.
• removes: 'Removes' is in the present tense and does not fit the context of the sentence, which requires an infinitive.

Correct answer: removed

Explanation: The word 'removed' is the past participle form of the verb 'remove,' which fits grammatically in this context as it describes the completion of the action of eliminating tariffs as a result of the agreement.

Meaning: 'Removed' means that tariffs were taken away or eliminated.

Wrong options:

• built: 'Built' is the past tense of 'build,' which does not relate to the action of eliminating tariffs and is therefore incorrect.
• remove: 'Remove' is the base form of the verb and does not fit in this context where a past action is being described.
• build: 'Build' implies creating rather than eliminating, which does not match the context of tariffs being eliminated.
• allowed: 'Allowed' is in the past tense but does not convey the action of removing tariffs, making it contextually inappropriate.
• removes: 'Removes' is in the present tense and does not fit the past context of the sentence.

Correct answer: allowed

Explanation: The verb 'allowed' is in the past tense, which is appropriate here as it describes the effect of the North American Free Trade Agreement on globalization. It fits grammatically and contextually as it indicates that the agreement enabled the process of globalization.

Meaning: 'Allowed' means to permit or enable something to happen, in this case, the globalization of goods and services.

Wrong options:

• built: 'Built' is the past tense of 'build,' which does not fit the context of enabling globalization and is therefore incorrect.
• removed: 'Removed' is the past participle form and does not convey the meaning of enabling or permitting, making it unsuitable here.
• build: 'Build' is in the base form and implies creation rather than enabling, which does not match the context of globalization.
• removes: 'Removes' is in the present tense and does not fit the past context of the sentence, which requires a past tense verb.
• remove: 'Remove' is the base form and does not fit grammatically in this context where a past action is being described.