Final answer:
B. No, you should not write that check.
Step-by-step explanation:
To determine whether you should write a check for $600, we need to calculate the balance in your checking account after the check deposit and check hold.
Starting balance: $400. Deposit: $700. Check hold: $700.
$400 + $700 - $700 = $400.
Since your balance will remain at $400 after the check hold, you should not write a check for $600, as it will exceed your available balance.