Production possibilities frontiers are usually bowed outward. This is because a. resources are specialized; that is, some are better at producing particular goods rather than other goods. b. of the effects of technological change. c. the opportunity cost of producing a good decreases as more and more of that good is produced. d. the more resources a society uses to produce one good, the fewer resources it has available to produce another good.

d. the more resources a society uses to produce one good, the fewer resources it has available to produce another good.

Explanation:

The Production possibilities frontiers is a curve that shows the various combination of two goods a company can produce when all of its resources are fully utilised.

As more quantities of a product is produced, the fewer resources it has available to produce another good. As a result less of the other product would be produced. So, the opportunity cost of producing a good increases as more and more of that good is produced.

Please check the attached image for a diagram of the Production possibilities frontiers

answer; /// i do believe that the above is (true)

the third answer is correct.