Final answer:
The situations that demonstrate opposite quantities combining to make zero are options a and d: depositing money and spending money in option a, and having a credit card balance and making a payment in option d.
Step-by-step explanation:
In this question, the situations that demonstrate opposite quantities combining to make zero are options a and d.
In option a, you deposit $200 into your checking account (+$200) and spend $170 on clothes (-$170). The opposite quantities of deposit and spending combine to make zero.
In option d, you have a credit card balance due of $257.17 (-$257.17) and you pay the minimum amount due of $55 (-$55). Again, the opposite quantities of the balance and the payment combine to make zero. Therefore, the correct options are a and d.