Answer:
Rick's approach to studying is:
B. Efficient but not effective.
Step-by-step explanation:
Rick achieved efficiency by reducing the amount of time he spends studying so that he could have personal time and still make good grades. But, according to the scenario, he kept to his schedule but could not make his targeted grades. This implies that his efficient schedule is not producing the required results. It is merely efficient but not effective. Effectiveness deals strictly with the production of results or output and not with planning.