You have been tasked with evaluating the public opinion on the latest full-house showing of "The Sound of Music" at the local theatre. To obtain a sample, 12 attendees out of the total 120 need to be surveyed. The theatre is divided into three equal-sized seating sections: left, middle, and right. You will randomly select 4 individuals from each section, resulting in a total sample size of 12. Identify the name of the sampling techniques. Cluster sampling Systematic sampling Simple random sampling Stratified random sampling