Mark is always late with his homework. Which positive reinforcement should Mark's teacher use so that he submits his homework on time? scolding Mark in the presence of his classmates
o barring Mark from taking exams
detaining Mark after class
appreciating Mark's work in the presence of his classmates

Appreciating Mark's work in the presence of his classmates.

Explanation:

The first one is not a positive reinforcement lol- that would make him embarrassed and he would most likely start to blame himself and lose motivation making the situation more difficult..

Third one- detaining him wont do anything for that situation unless hes talking about ways to help him improve on getting in work on in time.

The last one will make him feel good about himself and will make him want to do better including enhancing his slight mistakes- such as being late. Seems like the only reasonable answer. :)

explanation:

i’m   sure probably just geuss and see which one you can get right, i’m pretty sure it is the combination of goods and services