Question: Last year, Rosa had a biology course as well as a physics course. She had more quizzes in the biology course and was earning better grades compared to the physics course. She devoted more than half of her study time to biology last year. This year, she has another biology course and another physics course. This time she has more quizzes in physics, and her grade is also better in physics. She still spends more than half of her time studying for biology. According to the matching law, this distribution of effort can be accounted for by _____. Need Assignment Help?
a. self-control b. optimization c. COD d. bias