Amelia should randomly choose people only in their block.
Amelia should ask people what part of the neighborhood they live in.
Amelia should ask people their age.
What is representative sample?
A representative sample are data collected from small group of individual which can be use to represent a large population of people so as to reach a conclusion.
Most researcher tend to make use of representative sample when they want to draw a conclusion as it save time and reduce the stress of having to carryout survey on a larger population.
Therefore Amelia should randomly choose people only in their block.
Learn more about representative sample here:https://brainly.com/question/25142707