Examples of primary reinforcers include: food, drink and pleasure.
Secondary reinforcers include grades. Have a good day
Answer:
1 hr on problems and 3 reading
Explanation:
1 hr on problems bc he's able to finish 40 problems which is better than reading for 1 hr since the teacher said reading for 1 hr is equivalent to solving 35 problems. in the 2nd, 3rd and 4th hours he solves less than 35 problems each hour so it's better to just read for an hour.
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D. Because their bring up a whole new level of what it looks like how big is it who eats their whose the owner what are the workers like.