The national crime victimization survey selects subjects by identifying rural counties or metropolitan areas as primary sampling units, then chooses geographic regions within these units, and then chooses addresses within the geographic regions. this is an example of a sampling approach.

multi-stage cluster.

Explanation:

The National Crime Victimization Study identifies topics by choosing rural counties or urban areas as main sampling units, then selecting geographical areas within those units, and then selecting addresses within geographical areas. This is an illustration of a sampling method for a multi-stage cluster.

Multi-stage sampling may be a conceptual model of cluster sampling as it is a method of sampling involving the division of the demographic into groups (or clusters). Then  1 or more than 1 clusters are randomly selected and all of them are sampled within the selected cluster.

georgians assisted in financing united states war effort during world war i through both of the following options:

they bought war bonds from the government.

and

they gave food through the creation of victory/liberty gardens.