Question

fill in the blank in the sentence below with the part of the microscope that completes that function. the choose your answer... holds the objective lens and rotates, allowing you to select which lens you are using.

Explanation:

In a microscope, the revolving nosepiece (or turret) holds the objective lenses and can be rotated to select the desired objective lens for use. This component is specifically designed for this function of holding and rotating objective lenses.

Answer:

revolving nosepiece (or turret)