Which two statements are correct about Send Logging? (Choose two.)

Which two statements about a database of record are correct? (Choose two.)

A customer has an email newsletter to send out, but wants to deliver it with a targeted message for customers within a specified age range. These data have been defined in attributes from a sign-up landing page.
How should the customer individualize the email content?

A customer wants to automate a series of three emails as part of a Membership Renewal drip campaign.
Email #1 will be sent one month prior to the member's renewal date.
Email #2 will be sent one week prior to the member's renewal date.
Email #3 will be sent on the member's renewal date.
A master audience is updated in real time via the API.
Which steps should be included in the customer's automation?

A customer executes a large number of sends via Marketing Cloud connect and is concerned about API limits.
What should the consultant suggest to minimize the impact of Marketing Cloud Connect on daily API limits?
(Choose two.)