Mr. mason is working with jacy to increase the number of pizza boxes she folds during her first thirty minutes at the pizza shop during her vocational instruction. she currently folds an average of 15 boxes during a 30-minute period. mr. mason would like to increase this number to 100. what would be the most appropriate research design to use?
(a) changing criterion design
(b) multiple baseline design
(c) alternating treatment design
(d) changing conditions design