Answer:
Images and captions may be simple add on text features, but they are very important. They can help you understand the main idea because often times visual representations can help a reader when trying to come up with a picture in their head of what the text is about. The general idea is that the pictures can help a reader see something more clearly. Pictures may also highlight some of the main ideas of the text, which helps the reader pay more attention the main idea instead of little details that may not be as important.
