Which of the following is the kind of decision that can be made at the margin?
Awhether or not to add an extra room to a home.
Bwhether or not to hire new workers.
Cwhether or not to go on a vacation.
Dwhether to have a dog or a cat as a pet.?
Awhether or not to add an extra room to a home.
Bwhether or not to hire new workers.
Cwhether or not to go on a vacation.
Dwhether to have a dog or a cat as a pet.?