Answer: by constantly assessing the opportunity cost of our choices.(A)
Step-by-step explanation:
Resources allocation has to do with how resources are distributed. Human wants are unlimited and there are limited resources so we have the problem of resource allocation.
The problem of allocation of resources is due to the scarcity of resources, and as a result, people make choices. Choices are made by assessing the wants should be satisfied and the wants that should be left unsatisfied.
Due to the scarcity of resources, we are best off allocating things by assessing the opportunity cost of our choices. We have to look at the impact of what we forgo when we make choices.