Final answer:
The 60-year-old retiree is most likely to vote in a U.S. presidential election due to higher engagement and reliance on government services, compared to the generally low voter turnout among younger demographics.
Step-by-step explanation:
Among the individuals listed in the question, the 60-year-old retiree is most likely to vote in a U.S. presidential election. Analyzing voting behavior reveals that certain demographics, such as senior citizens, typically have a higher voter turnout. Senior citizens often rely more on government services like Social Security and Medicare, and as a result, are more engaged with the political process and its outcomes. In contrast, young people, including college students, show lower levels of political participation, partly due to a sense of disconnect with politicians or a belief that their vote carries little weight.