Western Governors University (WGU) HLTH2012 D391 Health Ecosystem Practice Exam

Adverse selection in health insurance occurs when individuals delay purchasing insurance until they have a significant need for it, which is encapsulated in the chosen answer. This behavior leads to an uneven risk pool where those who are most likely to incur high medical costs are the ones who seek insurance coverage, while healthier individuals may refrain from purchasing it. This results in higher costs for insurers, as they are left with a group of policyholders who require more medical care than the average.

The focus on delaying insurance until a need arises creates a situation where the insurance companies face increased risks and costs, as they may struggle to balance their premiums and payouts. This phenomenon can ultimately destabilize the health insurance market, leading to higher premiums and potentially fewer options for all insured individuals.