Based on the provided email excerpt and instructions, what is the primary task described in the image?

Task Description

• The primary task is to write a reply email to Mark.
• The reply email should be between 80 and 90 words.
• The email must answer the three questions posed in Mark's original email:
• How can you describe your best friend's character?
• Do your friends help you in difficult situations?
• What qualities do you like in a person?
• The reply needs to follow standard email formatting rules.
• Specific exclusions: Do not include the sender's address or the date.
• Specific inclusions: Thank Mark for his email and mention that you are awaiting his reply.

Overall Goal: To compose a coherent and appropriately formatted email response that addresses all specified points within the given word count.