Answer: b). Scarcity
Explanation:
Scarcity refers to the relative shortage of resources in comparison to human wants.
Non-renewable resources refer to the resources which do not renew itself at a sustainable rate and have the risk of depletion. In addition to this, human wants are unlimited, a normal human being wants more and more of everything.
When non-renewable resources and unlimited wants are combined together they lead to the shortage of resources, which lead to its scarcity.