Concept:Continuous variation produces a range of intermediate forms, often shown as a bell-shaped curve.Explanation:The illustration shows individuals spread smoothly across a range of values.Most individuals fall near the middle, with fewer at the extremes.This gradual distribution around an average is typical of continuous variation.Examples include height and weight in humans.Discontinuous variation would show separate, non-overlapping categories instead of a continuous range.Answer:A. continuous variation
