Which of the following would cause the production possibilities curve with two products, missiles and steel, to shift outward?

a. Reopening steel plants that had been closed
b. Rehiring laid-off steelworkers
c. Using machinery for missile production instead of steel production
d. Using machinery for steel production instead of missile production
e. Developing a more efficient steel making process

Question

Which of the following would cause the production possibilities curve with two products, missiles and steel, to shift outward?

a. Reopening steel plants that had been closed	
	 b. Rehiring laid-off steelworkers	
	 c. Using machinery for missile production instead of steel production	
	 d. Using machinery for steel production instead of missile production	
	 e. Developing a more efficient steel making process