Susan would like to conduct a survey of homeowners in the Meadowbrook neighborhood to get their opinions on proposed road modifications in the area. Which of the following is an example of a stratified sample?

A) Susan randomly chooses two streets in the neighborhood and selects every home on these streets.
B) Susan selects the first 20 homes that she passes as she walks into the entrance of the neighborhood.
C) Susan selects every third house on each street in the neighborhood.
D) Susan ensures that her sample contains a number of two-story, split-level, and ranch homes in her sample that corresponds to the number of homes in the neighborhood.

D