Sayjolol, director of training for a large manufacturing organization, has developed a workplace diversity appreciation program. All employees are interviewed a month after attending the program. They are asked about any workplace behaviors that did not exhibit diversity appreciation and their actions in those situations. What training evaluation method is Sayjolol using?

a) Supervisor and incumbent opinionb)Test-retest method
c) Pre-post performance method
d) Pre-post training performance with control group method
e) Post training performance method