Do you have an example of the "text"? It's difficult to answer a question like this without seeing the text itself. Main pieces of imagery can be something describing how stuff looks, smells, feels, or what it sounds like. It should create a picture in your head. So whatever helps illustrate the text for you is an example of imagery! Hope this helps!
<h3>Answer to the I Am heavy Forward, But Backward I'm not is a Ton. A ton is 2,000 lbs. That’s heavy. The word ton backwards is literally the word not (n-o-t).</h3>