Final answer:
A 50-year-old blind male is most likely to be the individual who has Medicaid, as Medicaid broadly covers the blind and disabled.
Step-by-step explanation:
An individual who has Medicaid is most likely to be described in the scenario as a 50-year-old male who is blind. Medicaid is known to cover individuals who are blind, disabled, or elderly, among other vulnerable groups. According to the information provided, Medicaid enrollment and spending statistics, the blind and disabled constitute 16% of those enrolled, and a significant portion of Medicaid expenditures is allocated to these groups. While option a, an 85-year-old female with hypertension, is likely to be covered by Medicare, which primarily serves those over 65, option b, a 25-year-old pregnant woman, and option d, a 70-year-old male who is hearing impaired, are less specific in meeting the established Medicaid coverage criteria compared to the clear eligibility of the blind individual.