Final answer:
A creditor or servicer may cancel an escrow account only when the borrower satisfies all mortgage obligations and makes a written request for cancellation.
Step-by-step explanation:
According to the information provided, a creditor or servicer may cancel an escrow account only upon the earlier of:
- The borrower's satisfaction of all obligations secured by the mortgage.
- The borrower's written request for cancellation.
- Both (1) and (2).
- None of the above.
Therefore, the correct answer is option (3) - both the borrower's satisfaction of all obligations secured by the mortgage and the borrower's written request for cancellation.