Playground survey

This task is about finding an unbiased sample for a survey.
childrens playground
 
The Opoho City Council wants to find out what the people in their city think about building a new children's playground.
Because Opoho is a large city, the council wants to give their questionnaire to only a sample of people who live in the city. They want their sample to be a representative one. This means they want the people in their sample to fairly represent all of the people in the city of Opoho.

Question 1Change answer

Write down two ways the Council could select people for their sample to make sure it is representative of all the people who live in the city.
1. 2.