The level of measurement for final grades A, B, C, D, and F is ordinal.
Explanation: Ordinal data represents categories with a meaningful order or ranking, but the intervals between the values are not necessarily equal. In this case, the grades indicate a hierarchy, with A being the highest and F being the lowest. While we can say that an A is better than a B, we can’t quantify the precise difference between these grades in a meaningful way, making them ordinal and not interval, nominal, or ratio.