A.I. Explanation:

Correct answer: invaded

Explanation: The verb 'invaded' is in the past tense, which is necessary to match the historical context of the sentence. It indicates a completed action that occurred when the Roman Army entered Britain, fitting grammatically and contextually with the timeline provided.

Meaning: 'Invaded' means to enter a place forcefully, often with the intent to conquer or occupy.

Wrong options:

• entailed: 'Entailed' is a verb that means to involve or require as a necessary part, which does not fit the context of a military action.
• enlarged: 'Enlarged' is a verb that means to make larger, which does not convey the action of entering or conquering a territory.
• shifted: 'Shifted' is a verb that means to change position or direction, which does not apply to the action of the Roman Army entering Britain.
• range: 'Range' is a noun that refers to a variety or extent of something, which does not fit as a verb in this context.

Correct answer: shifted

Explanation: The verb 'shifted' is in the past tense and indicates a change from one state to another, which aligns with the context of the transition from communal life to a more individualistic society. This fits grammatically and contextually within the sentence structure.

Meaning: 'Shifted' means to change or move from one position or state to another.

Wrong options:

• invaded: 'Invaded' is a past tense verb that refers to a military action, which does not fit the context of changing social structures.
• became: 'Became' is a past tense verb that indicates a change of state but does not convey the idea of a gradual transition as effectively as 'shifted.'
• entailed: 'Entailed' means to involve or require, which does not fit the context of a social change.
• enlarged: 'Enlarged' means to make larger, which does not apply to the concept of shifting societal norms.
• range: 'Range' is a noun that does not fit as a verb in this context.

Correct answer: became

Explanation: The verb 'became' is in the past tense and indicates a transformation or change in status, which is appropriate for describing Britain's integration into the Roman Empire. This aligns with the historical context and maintains grammatical coherence.

Meaning: 'Became' means to come to be or to undergo a change in state or condition.

Wrong options:

• invaded: 'Invaded' refers to a military action and does not fit the context of Britain's status within the Roman Empire.
• shifted: 'Shifted' implies a change in position but does not accurately describe the process of becoming part of an empire.
• entailed: 'Entailed' means to involve or require, which does not convey the idea of transformation in this context.
• enlarged: 'Enlarged' means to make larger, which does not apply to the concept of becoming part of a political entity like the Roman Empire.
• range: 'Range' is a noun that does not fit as a verb in this context.