Answer:
This question is incomplete. Here are the missing options:
The answer is a. Fixed-ratio.
Explanation:
A fixed-ratio schedule of reinforcement involves rewarding the person for a specific number of completed behaviours. For example, if a teacher assigns one extra point for every five class participations, then he is using a fixed-ratio schedule.
Fixed-ratio schedules have been proven to be effective in areas such as school and the workplace, and as long as the action-reward ratio is consistent.