Question

which part of the light microscope is the arrow pointing to?
options: nosepiece, diaphragm, arm, coarse adjustment

Explanation:

The arrow in the light microscope image points to the nosepiece, which is the part that holds the objective lenses and can be rotated to switch between them. The other options: diaphragm controls light intensity, arm supports the body, and coarse adjustment focuses the image roughly—none match the arrow's position.

Answer:

A. nosepiece