Respuesta :
the opportunity cost is what she loses if she chooses to sleep in
if she studies, she will probably get an A and lose 3 hours of sleep
if she sleeps in, she will probably get a C and gain 3 hours of sleep
so the opportunity cost of sleeping in is the A that she could have gotten if she had studied
if she studies, she will probably get an A and lose 3 hours of sleep
if she sleeps in, she will probably get a C and gain 3 hours of sleep
so the opportunity cost of sleeping in is the A that she could have gotten if she had studied