If the scores in a test are 2, 3, 4, 4, 5, what is the mode?

The mode of a set of numbers is the value that appears most frequently within that set. In the provided scores — 2, 3, 4, 4, 5 — the number 4 occurs twice, while all the other numbers (2, 3, and 5) each appear only once. Therefore, since 4 has the highest frequency in this list, it is identified as the mode. This makes option C the correct answer, as it accurately represents the number that appears the most often in the given set of test scores. Understanding the mode is essential in data analysis as it provides insights into the most common occurrences within a dataset.