Of the Following 75 Year Olds, Who Is Most Likely

Multiple Choice

Of the following 75 year olds, who is most likely to show low scores according to the Seattle Longitudinal Study of Adult Intelligence?

A) Hugh, who competes in 5K runs
B) Gordon, who retired with a comfortable income
C) Matt, who celebrated fifty years of marriage
D) Bert, who earned a GED when he was in his teens