Final answer:
The leaf that is darker green will have the highest reading from the chlorophyll meter.
Step-by-step explanation:
The leaf that is darker green will have the highest reading from the chlorophyll meter. Chlorophyll is the pigment responsible for the green color of plants and is essential for photosynthesis. In plants, chlorophyll absorbs light energy, specifically in the red and blue regions of the visible spectrum, and reflects green light.