Answer:
Permission modal: Students are permitted to utilize their laptops during class to take notes and access e-books.
Obligation modal: Both students and teachers must engage in paper recycling.
Prohibition modal: It is not necessary for the school to keep the lights on when the classroom is unoccupied
Explanation:
Modals conveying permission serve to express whether an action can be performed or to seek confirmation regarding it. The modals can, may, and could are included in this category, with may and could being more formal choices compared to can.
Obligation modals highlight something that is mandatory. Must is associated with personal requirements such as I must prepare for the exam, or rules like you must wear gloves in the lab. On the other hand, have to indicates a broader obligation, like Students have to prepare diligently for the exam.
Prohibition modals feature in sentences that denote actions that are forbidden. Terms such as cannot and must not convey these restrictions. For instance, smoking is not allowed inside this building.
Dhruv: How about catching a movie, Madhav?
Madhav: I'm afraid I CANNOT (this indicates Madhav is unable to attend). I NEED (suggests he has to do something, and it’s the only suitable word to precede ‘to’) to get home right away.
Dhruv: But why SHOULD (this is a courteous way to inquire about someone’s actions) you be in such a rush?
Madhav: My mom is unwell. I MUST (means ‘need to’, but since there's no ‘to’ following it, it's the only logical choice) take her to the hospital without delay. Dad is away.
The last one...
there are insufficient bicycles for the youngsters residing at the Kilbarchan Home for Boys.
Greetings.
The correct selection is C.) the Roman withdrawal from Britain
Initially, the Anglo-Saxons were employed by the Romans, but then they revolted and remained as the Romans were exiting Britain. Upon the Romans' departure from Britain, various factions began to contest for dominance on the islands. The Anglo-Saxons, who had taken on a rebellious role, continued to stay during this Roman exit from Britain.
Wishing you a pleasant day