Given,
The initial balance in the checkbook is $463.18.
The deposite money is $265.
The amount of check is $198.73.
The charge paid for bank is $2.50.
The ending balance at the month end is,
[tex]\begin{gathered} \text{Ending balance=}463.18+265-198.73-2.50 \\ =526.95 \end{gathered}[/tex]Hence, option b ($526.95) is correct.