Answer:
By asking intellect based question such as "Is your dog helping you in identifying the traffic signal light and how do they interpret their message to you?"
Step-by-step explanation:
Seeing eye dogs is a good way to assist a person with impaired vision. Since dog can easily visualize physical barriers or obstruction such as pot hole on road , car coming in the direction of walking etc., hence, in order to test the validity of the conclusion it would be beneficial to ask intellect based question from a person owing Eye Dogs
For example -
Is your dog helping you in identifying the traffic signal light and how do they interpret their message to you?