Answer:
Assign numbers to each client and then use a random number generator to choose one hundred clients to survey.
Explanation:
I think the best method would be:
Assign numbers to each client and then use a random number generator to choose one hundred clients to survey.
It is the best way to choose a random sample as it is a fair representation of her all customers. In this sample all of her costumers will be assigned numbers and will be chosen randomly. ...