What do you mean ??main point
Children all over the world struggle in classes everyday due to a lack of sleep. Students then get lower grades because they cannot focus as much as they can if they were to get more or enough sleep.
The key to maintaining a strong friendship is trust and communication. Youre friends with someone because you two have something in common or simply get along. Trusting and being able to be trusted leaves less room for problems. If problems arise talking it out usually clears up misunderstandings.
Answer:
Studies show that being bilingual has many cognitive benefits.
Explanation: According to research, speaking a second language can mean that you have a better attention span and can multi-task better than monolinguals. This is because being bilingual means you are constantly switching from one language to the other.
I think the answer is A also.