Thursday and Saturday are the 2 days on which Isabelle gets charged an overdraft fee.
<h3>What is an overdraft fee?</h3>
Overdraft fees may occur when a payment is passed and there are no sufficient funds in the bank account to fully cover the transaction.
Alternatively, if declining the payment, your bank may hand over the money for the transaction and charge you a fee.
<h3>Conclusion of the above problem:</h3>
According to the given scenario, Isabelle has $84.00 in her account signifies that she has her own cash in a bank. This means that Isabelle has a debit account and is possible to use a debit card for her deposits and purchases.
A debit card is used to withdraw cash from her account, with no line of credit. This means that the cash for every purchase she makes is withdrawn from her account, which then debits the balance. On the other hand, every deposit into her account increases the balance which is credited to her account.
The changes made throughout the week that impacted her account is disclosed in the image given below:
This image shows that Isabelle is charged an overdraft fee on Thursday and Saturday, as she spent more than what she had in her account on those days.
Therefore, options (I). Thursday and (III). Saturday is correct.
Learn more about overdraft fees, refer :
brainly.com/question/3050461