Answer:

Explanation:
It can help to write more digits. If we write the numbers in the order they are in choice B, we have ...
- 7.1530
- 7.153153153...
- 7.15333333...
- 7.15353535...
- 7.15555555...
Looking down the list, you can compare digits left to right and tell that these are in smallest-to-largest order. The highlighted digits are the ones that place the number in its appropriate order