Final answer:
Michael used the Format menu option to increase the contrast of a picture in a word processing program, which is intended for adjusting the visual properties of images.
Step-by-step explanation:
If Michael has increased the contrast of a given picture, he likely used the Format feature or menu option in a word processing program. The Format menu allows users to adjust various visual aspects of images inserted into documents, including brightness, contrast, color saturation, and more. This feature is essential for enhancing the visual impact of images to suit the content of the document.
It's important to note that the other options, such as Insert, View, Review, or File, serve different purposes. For instance, as mentioned in the reference, the Review tab is used when you want to accept or reject changes in a Word document. However, it does not provide tools for editing the appearance of images.