Answer:
a. outside the PPF
Step-by-step explanation:
PPF is bowed outward, so that as the quantity of pizza and pasta produced increases, it becomes more costly to produce another unit of pizza.
The PPF is a boundary between the attainable and unattainable combinations of pizza and pasta.
Points inside the PPF and on the PPF are attainable and points outside the PPF are unattainable.
Unattainable points are outside the PPF.
Because the PPF shows the limits to production, it separates attainable combinations from unattainable ones.