Leaves of most plants appear green because the chlorophyll present in it :

The color of an object is determined by the wavelengths of light it reflects rather than the ones it absorbs. Chlorophyll, the primary pigment responsible for photosynthesis in plants, specifically absorbs light most efficiently in the blue and red regions of the visible light spectrum.

• Absorption: Chlorophyll molecules utilize the energy from red and blue light to facilitate the chemical reactions of photosynthesis.
• Reflection: Chlorophyll is very poor at absorbing light in the green wavelength (approximately 500–570 nm). Instead, this light is reflected off the leaf's surface or transmitted through it.

Since the green light is reflected back to our eyes while the red and blue lights are captured by the plant, the leaves appear green to the human eye. Thus, Option A is the correct explanation for the biological phenomenon.