Answer: D ask for information about volunteer opportunities
Step-by-step explanation: The purpose of this letter is to inform the recipient, the director of the children's home, that they are looking for a volunteer opportunities there.
This is evidenced by two lines within the body of the letter saying "I am writing to request information about volunteering opportunities..." and "Please...let me know about volunteer opportunities."
The rest of the letter is providing background information and credentials of the author.