Sammy, an RBT working at a day home has spent a great deal of time teaching one of the residents how to make a sandwich. Before each session she sets out all of the materials needed in a line on the table to help the client remember what to do in what order. She first puts out the bread, next in line is a knife, then the peanut butter, then the jelly, then a platE. If one day Sammy doesn't put the peanut butter out she is implementing what?
A. VR schedule of reinforcement
B. behavior chain interruption strategy (BCIS)
C. task analysis
D. total task chaining