Every time alice cleans her room properly and makes the bed, she receives a marble. when she accumulates 100 marbles, she can get the new video game she wants. what type of behavioral program are alice's parents using? a. token economy b. negative reinforcement c. modeling d. systematic desensitization

Which of the following is an example of proximodistal pattern of growth? (a) abbey learning to sit first before learning to stand or crawl (b) alex learning to move his eyes before learning his first words (c) colin learning to stare at moving objects before trying to touch them with his hands (d) polly learning to grab the objects with her whole hands before learning to pick them up with her fingers