Final answer:
To increase the amplitude of CRI in microscope images, one can alter the target. Changing the properties of the target, such as using special dyes or stains, manipulates the interaction between light waves and the target to enhance contrast and improve image clarity.
Step-by-step explanation:
The technique that increases the amplitude of CRI (contrast with interference) in microscope images is to alter the target. By changing the properties of the target, such as using special dyes or stains, the interaction between light waves and the target can be manipulated to enhance contrast and improve the clarity of the image. Increasing the intensity and frequency of the light used in microscopy can also contribute to increasing the amplitude of CRI, but altering the target is the primary technique.