Meaning: 'Settled' means to establish a residence or community in a place.

Wrong options:

• built: 'Built' is a past tense verb that refers to construction, which does not fit the context of establishing a community in this scenario.
• open: 'Open' is an adjective that does not serve as a verb and does not fit grammatically in this context.
• convenient: 'Convenient' is an adjective that describes ease of use or access, which does not relate to the action of establishing a community.
• influenced: 'Influenced' is a past tense verb that refers to having an effect on something, which does not fit the context of settling islands.
• confirmed: 'Confirmed' is a past tense verb that means to establish the truth or correctness of something, which does not relate to the action of settling.
• keen: 'Keen' is an adjective that describes sharpness or intensity, which does not fit as a verb in this context.

Correct answer: open

Explanation: The word 'open' is an adjective that describes the type of ocean being referred to, fitting grammatically and contextually as it highlights the vastness of the ocean where the Polynesians traveled.

Meaning: 'Open' refers to an unobstructed or expansive area, in this case, the ocean.

Wrong options:

• built: 'Built' is a past tense verb that does not describe the ocean and does not fit grammatically as an adjective.
• settled: 'Settled' is a past tense verb that does not describe the ocean and does not fit in this context.
• convenient: 'Convenient' is an adjective that describes ease of access, which does not accurately describe the ocean in this context.
• influenced: 'Influenced' is a past tense verb that does not describe the ocean and does not fit grammatically as an adjective.
• confirmed: 'Confirmed' is a past tense verb that does not describe the ocean and does not fit in this context.
• keen: 'Keen' is an adjective that describes sharpness or intensity, which does not fit as a description of the ocean.

Correct answer: keen

Explanation: The word 'keen' is an adjective that describes the intensity of the sense developed by the Polynesians, fitting grammatically and contextually as it emphasizes their acute awareness of ocean currents.

Meaning: 'Keen' means having a sharp or intense perception or understanding.

Wrong options:

• built: 'Built' is a past tense verb that does not fit grammatically as an adjective describing a sense.
• settled: 'Settled' is a past tense verb that does not describe a sense and does not fit in this context.
• open: 'Open' is an adjective that does not describe the intensity of a sense and does not fit grammatically here.
• influenced: 'Influenced' is a past tense verb that does not fit as an adjective describing a sense.
• confirmed: 'Confirmed' is a past tense verb that does not fit grammatically as an adjective in this context.
• convenient: 'Convenient' is an adjective that describes ease of use, which does not relate to the intensity of a sense.

Correct answer: influenced

Explanation: The word 'influenced' is a past tense verb that fits grammatically in the context of the sentence, indicating the effect that winds and islands had on the Polynesians' navigation and understanding of the ocean.

Meaning: 'Influenced' means to have an effect on someone or something.

Wrong options:

• built: 'Built' is a past tense verb that does not relate to the context of how winds and islands affect navigation.
• settled: 'Settled' is a past tense verb that does not fit the context of influence and does not relate to the action described.
• open: 'Open' is an adjective that does not fit grammatically as a verb in this context.
• confirmed: 'Confirmed' is a past tense verb that means to establish the truth of something, which does not relate to the influence of winds and islands.
• keen: 'Keen' is an adjective that describes sharpness or intensity, which does not fit as a verb in this context.
• convenient: 'Convenient' is an adjective that describes ease of access, which does not relate to the influence of winds and islands.