Answer: The global supply food that best explain outward shift are (i) More people start new farms.
(ii) Technologies boosting yields.
(iii) Drop in hay price relative to price of food.
(Iii) Lower taxes for farmers.
Step-by-step explanation:
PPF is used in two categories, consumer and capital goods, one of the these categories that leads to increase in economy is capital good, while the other category -- consumer good doesn't contribute immensely to economy. When both goods is in our capacity, it's termed efficient. It should be noted that, anything that makes the economy increases or decreases leads the shift in curve.