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C. You can never guarantee anything, including getting sick, but you certainly dont increase your chances of being unhealthy by trying to be healthy. Being healthy makes us feel good and generally our lives are better - as the Romans said: A healthy mind in a healthy body!
True, the extent to their liking towards the subject influences grades and achievement test results. When it comes to predicting accomplishment scores, IQ is more important than grades
Answer:
Fixed-interval
Explanation:
A fixed interval schedule is a term that refers to a type of "reward" when an activity is performed over a certain period of time. In the case given in the question, Leon organizes his studies based on interval programming, where he studies long before the test, but "rewards" himself after the test by studying less after the test.