To determine the amount on which Saundra will be charged interest for month 8, we need to look at her previous balance for month 7. The interest is calculated based on the previous month's balance.
From the given table, we can observe the following for month 7:
- The "Previous balance" for month 7 is \[tex]$267.18.
Therefore, the amount on which Saundra will be charged interest for month 8 is:
\[
\$[/tex]267.18
\]
Thus, the correct option is:
C. \$267.18