1-Tony Stark performs a study on the physical abilities of all the characters in the Infinity War movie. He doesn't want to collect data on everyone, so he just collects data on a portion of them. To do this he collects data on those around him. What type of sampling method did Tony use?

stratified-random

convenience

systematic

random

2- Dr. Bruce Banner has Tony Stark review a questionnaire that he is going to give to a sample of Marvel characters. What type of validity is enhanced by doing this?

predictive validity

construct validity

concurrent validity

content validity