Sarah has chosen to baby-sit with a neighbor child. Her friends go to a movie. What is the opportunity cost of Sarah’s choice? a. The money she earns from baby sitting
b. The fee charged by the movie theater
c. The time not spent with her friends at the movie
d. Never being able to see that movie in the future

c. The time not spent with her friends at the movie
explanation:
an opportunity cost is the loss of potential gain from other alternatives when one alternative is chosen.

Hamlet's fourth soliloquy is probably his most famous one - "to be or not to be."it is rather different from his previous soliloquies because now he is contemplating something that didn't come up before - suicide. he is thinking whether it is worth it to fight to find his father's murderer when in the end all of them are going to die, so why not die sooner than later. he is contemplating if he should go on fighting or just kill himself and end it all, which is why this soliloquy in particular is rather depressing, hesitant, and gives a deeper insight into hamlet's madness.