To descend down with a rope. Usually down the side of a mountain.
Explanation:
My Dear father
I received your letter yesterday. I am fine. I am glad to know that you all are safe and sound. In the letter, you have wanted to know about my hostel life. Here, I am giving you a brief description of it.
The environment of my hostel is very charming. There is an open field in front of my hostel. I and my friends play here every afternoon. My hostel life is very happy and enjoyable. I can study here attentively. All the students are very helpful and friendly. Living here, I get opportunity to follow some rules and regulations. The foods are of high quality. The canteen and dining room are also neat and clean. In a word, I feel very happy living here.
No more today. My best regard to you
Yours affectionately
If the letter you are referring to is the one you get when you have your credit card account or bill delivered to your home, then the best answer would be most likely the second one. The letter provides the recipient information about the condition of his own bank account.