Final answer:
Private property rights promote economic growth by allowing individuals to freely use and trade their property within a system that enforces contracts. These rights enable business transactions that contribute to increased output and incomes, key indicators of a growing economy.
Step-by-step explanation:
A. private property rights, which are instrumental in promoting economic growth. Economic growth is facilitated when individuals can use their property to enter into contracts and trade freely, which is made possible through a system that enforces these contracts and property rights. A framework that supports private property rights creates a conducive environment for business transactions, thereby fostering an increase in output and incomes, which are key indicators of economic growth.
Options such as constant war and conflict, bartering as means of trade, collective property ownership, and high barriers to international trade often do not support economic growth. Instead, they may create inefficiencies and barriers that could impede the economic progress of a society. Therefore, private property rights stand out as a critical institution that aids in driving an economy forward by ensuring legal protections for property owners and contractual agreements.