Final answer:
The acceptable response when approaching a person crossing the street who is using a white cane or using a guide dog is to be respectful, give them the right of way, and offer assistance if needed.
Step-by-step explanation:
When approaching a person crossing the street who is using a white cane or using a guide dog, it is important to be respectful and considerate. One acceptable response is to give them the right of way and allow them to cross safely. You can also offer assistance if they seem to need it, but it is important to ask first before providing any help. It is also important to avoid distracting their guide animal.