Question 2 Put a pin in it x Suppose a nation's production possibilities frontier has environmental protection on the horizontal axis and healthcare on the vertical axis. Which of the following statements about the PPF is true? Since the opportunity cost of additional environmental protection is the healthcare that would have to be given up, opportunity cost is shown by the slope of the PPF The PPF reflects a nation's demand for environmental protection and healthcare Over time, as the amount of resources needed to produce environmental production and healthcare increases, the PPF will shift inward A nation which prefers environmental protection over healthcare would choose a point on the PPF which is close to the vertical axis 99+ OLOA ALN