What type of clause is used in the following sentance: the truth is that i was not prepared for this exam

How does the image support the text? read the passage and study the image from sugar changed the world the image shows how people kept bees for their honey by using hollow trees. the image shows that people used mashed fruits as sweeteners instead of sugar the image shows how ancient people collected honey before beekeeping began. the image shows an ancient person collecting sap from a maple tree for syrup.