Final answer:
A minor supporting detail in the passage is that high premium/low deductible plans are favored by those who can afford higher premiums or are already ill, underlining the predictability and suitability for certain individuals.
Step-by-step explanation:
The sentence that provides a minor supporting detail in the context of the passage about health insurance options is “These plans are the wise choice for the well to do or the already ill.” This sentence supports the main idea by further explaining the characteristics of high premium/low deductible plans and indicating which groups of customers might prefer this option. It emphasizes the predictability of the costs for those who can afford higher premiums or anticipate needing more medical care. This detail is minor because it deepens the understanding of a specific option rather than outlining the central comparison discussed in the passage.