The correct option is D Chloroplast
The light microscope is used to magnify the structures of certain organelles like cell walls, vacuoles, cytoplasm, chloroplasts, nucleus and cell membrane. A compound light microscopes use lenses and light to magnify cell parts. However, they usually can achieve a maximum of 2000x magnification which is not sufficient to see many other tiny organelles like ribosomes, endoplasmic reticulum, lysosomes, centrioles, Golgi bodies unless they have an electron microscope with increased magnification. But it can be used to magnify the organelle like chloroplast.