Afitness center employee wants to know how his members would feel about a rate hike to remodel the pool area. which sampling method will result in a sample that is not biased?

I had to look for the options and here is my answer.
Based on the experimentation done by a fitness center employee, the sampling method which would result in a non-biased sample would be by listing all the names of the employees and then calling every 15th of the member on the list. Hope this helps.

Just look outside and then you’ll see where the awnser is