Cap, captain, and capital, all use the root cap-. what is the most likely meaning of this root?

head

formal

military

manager
(think it might be formal)
and you

Date:

Address:

Dear Zayn,

I hope you had been good in recent days. Though the result of the finals that you sent me last week was not satisfactory at all.  But I know it's not impossible for you to be good in studies. Firstly you should try to mark out the mistakes that you have made in the last exams and try to learn the lessons well from them. after that you should practice more and more math and also other science subjects. In the result sheet, I saw you got a B for your behavior. Even in the worst phases of your life, you need to hold your temper and respect everyone. Not only that you should also be aware of behavior with parents and relatives. Good conduct is the key to a healthy and successful life. Without this, you will always be missing something or the other in life.

I hope you will be taking care of my words and improving your behavior. Also, take good care of your parents and study well. Hoping to meet as soon as possible.

Yours lovingly,

Anisha