Concept:The number of petals is a countable, whole number, so it is a discrete variable.
Explanation:Step 1: The number of petals can only take certain integer values (e.g., 3, 4, 5, etc.).
Step 2: It cannot take fractional or every possible value in a range, so it is not continuous.
Step 3: It is a numerical measurement, not a qualitative attribute.
Thus, it is a discrete variable.
Answer:Option B: A discrete variable.