Answer:
C. something you said you would do for the person.
Step-by-step explanation:
Small Business Management section 4.1 on Penn Foster:
"Tip #2. Make notes. Even if you meet only one new contact, you’re not necessarily going to remember the details of the meeting by next week. If you exchange cards with a dozen contacts, you certainly won’t be able to keep them all sorted out. As often as possible, allow yourself time between conversations to jot down a note on the back of each person’s business card. Write down
A few words that will help you remember what they look like
The date and place of your meeting (even if you assume you’ll remember this)
Anything you promised to do for them
Anything important you discussed
A reminder of something to follow up with them about when you contact them later"