Carson is a cashier at a store that sells athletic shoes and related apparel and accessories. His manager decides to train him to work on the floor, helping customers find what they need, in case the store is ever short-staffed on the floor. Carson's efforts to learn to perform a different job so he can fill in for those who are not on the job is an example of: Group of answer choices changing the sequence of tasks. job enrichment. cross-training. job simplification