Answer:
A minor's social security number
Explanation:
Given that a custodial account is an account opened for children or minors, it is expected that the "minor's social security number" should be used for Internal Revenue Service reporting.
This is to ensure the child or minor involved is duly registered as the current holder of the custodial account. This also helps in having the interest reported to the Internal Revenue Service on his behalf.
Hence, in this case, the correct answer is option A "minor's social security number."
