Many Landfills and Dumps in the United States Contain Toxic

Multiple Choice

Many landfills and dumps in the United States contain toxic materials. To see what proportion of the landfill contains toxic materials, the landfill is divided into 10,000 square grids that are each 10 feet by 10 feet square. After selecting one square grid at random to test for toxic materials, every five hundredth grid after that is selected for testing. What kind of sampling does this illustrate?

A) Systematic
B) Stratified
C) Cluster
D) Random sampling