Answer:
The item that would cause the trial balance to not balance is:
v. The cash payment of a $750 account payable was posted as a debit to Accounts Payable and a debit to Cash for $750.
Explanation:
The correct record should have been to credit the $750 in the Cash account. By this double debit entries for a transaction without a corresponding credit entry, the trial balance cannot balance as the debit side will be greater by $1,500 ($750 * 2) than the credit side. To correct the error, the Cash account will be credited with $1,500. One of the $750 cancels the earlier error while the second $750 puts the records straight.