need help with these questions

QUEBIIUN 'I The adage, "There is no such thing as a free lunch." is used to illustrate the principle that O a. people face tradeoffs. O b. goods are scarce. O c. income must be earned. Q d. households face many decisions. QUESTION 2 The opportunity cost of an item is O a. what you give up to get that item. 0 b. usually less than the dollar value ofthe item. 0 c. the dollar value of the item. 0 d.the number of hours needed to earn money to buy the item. QUESTION 3 Which of the following is not an example of the opportunity cost of going to school? 0 a. The party a student could have enjoyed if he had not stayed in to study for his exam. 0 b. The money a student spends on rent for his apartment while attending school. 0 c. The money a student could have earned by working if he had not gone to college. 0 d.The nap a student could have enjoyed if he had not attended class.