Final answer:
The point (4,0) represents the height of the plant after 0 days, indicating the starting point or the initial height of the plant before any growth.
Step-by-step explanation:
The point (4,0) in the context of the equation h = 0.5d⁴, where d is the number of days and h is the height in centimeters, represents the height of the plant after 0 days. The coordinates of a point on a graph are usually written as (x,y), and in this situation, d corresponds to x and h corresponds to y. Thus, the point (4,0) means that when d is 4, h equals 0, indicating that no time has passed, or the starting height of the plant before any growth occurs.