The population of a town is divided into three age categories. a random sample of each category is surveyed about voting choices. this type of sampling is called cluster sampling. stratified sampling. simple random sampling. systematic random sampling.

 Stratified sampling.

Step-by-step explanation:

We know that stratified sampling is a probability sampling method where the researcher divides the whole population into different subgroups known as strata

After that he randomly selects the final categories proportionally from the different strata.

Given statement : The population of a town is divided into three age categories. A random sample of each category is surveyed about voting choices.

Hence, this type of sampling is stratified sampling.

168

step-by-step explanation:

i am pretty sure that the answer is 168

b, i believe, but not sure.