Final answer:
The minimum amount of lay-up time for which a credit will be provided is 30 days.
Step-by-step explanation:
The minimum amount of lay-up time for which a credit will be provided is 30 days (option A).
In the context of mortgages, lay-up time refers to the period during which the borrower is not required to make regular mortgage payments.
During this lay-up period, the borrower may still accrue interest on the loan, but no principal payments are required. This provides the borrower some flexibility and relief from monthly mortgage payments.