Final answer:
The main purpose of informational text is to inform the reader by presenting facts and explaining concepts objectively, often using supporting media.
Step-by-step explanation:
The purpose of informational text is primarily to inform the reader about a specific topic. Unlike texts that aim to persuade or entertain, informational texts are designed to present facts, explain ideas, or describe processes in an objective manner. Examples include reports on news websites, instructions on how to operate devices, and educational materials such as textbooks. These texts provide valuable information and often incorporate media such as visuals or videos to complement and elucidate the content.