Final answer:
The higher the altitude, the thinner the air. This argument is similar to the comparison of the current speed of marathon runners to the speed of runners from the past to draw conclusions about an individual's current performance. Option C
Step-by-step explanation:
The argument in the question is based on the relationship between altitude and air thickness. It states that the higher the altitude, the thinner the air. By comparing the altitudes of Mexico City and Panama City, it concludes that the air is thinner in Mexico City.
A similar argument can be seen in option C) The people who run the fastest marathons these days are faster than the people who ran the fastest marathons ten years ago. Charles is a marathon runner. So Charles must run faster marathons these days than he did ten years ago. J
ust like the altitude affects the thickness of the air, the current speed of the fastest marathon runners is compared to the speed of runners from the past to draw a conclusion about Charles' current performance. Option C