Answer:
The study that Huan is conducting is a cohort study.
Explanation:
- At the very base of a cohort study lies 'observation' of the subjects involved in the study.
- This observation is concerned with the output given in response to a particular input.
- In the given case, Huan is observing whether or not the students are responding in a positive manner to the indirect motivation given to them by the teacher.
- The indirect motivation given by the teacher by praising the students is a function that Huan is determining whether or not is responsible for initiating the function of increased participation of students.