Identify which of these types of sampling is used random

Last updated: 2/5/2024

Identify which of these types of sampling is used random systematic convenience stratified or cluster A market researcher has partitioned all residents of a certain region into categories of young age 0 30 middle aged age 31 60 and senior over age 60 She is surveying 54 people from each category What type of sampling is used O cluster sampling convenience sampling O random sampling systematic sampling O stratified sampling