1. The problem asks to identify which of the given options is discrete data. 2. Discrete data consists of distinct, separate values, often counts, that cannot be subdivided meaningfully. 3. Continuous data can take any value within a range and can be measured. 4. Let's analyze each option: - Length of leg: This is a measurement and can take any value within a range, so it is continuous. - Number of shoes: This is a count of shoes, which can only be whole numbers, so it is discrete. - Mass of sugar: This is a measurement and can take any value within a range, so it is continuous. - Height of ceiling: This is a measurement and can take any value within a range, so it is continuous. 5. Therefore, the discrete data is the "number of shoes". Final answer: B