Which part of an informative essay helps the reader both see and hear the information?

A. Classification
B. Multimedia
C. Headings
D. Graphics

B. Multimedia

The correct answer is B. Multimedia.

To determine the right answer, we need to understand the purpose of an informative essay. An informative essay is a type of essay that presents factual information about a specific topic. The goal is to educate and explain something to the reader.

When it comes to helping the reader both see and hear the information, the use of multimedia is essential. Multimedia refers to the inclusion of various forms of media, such as images, videos, audio recordings, and interactive elements, in the essay.

By incorporating multimedia, the writer enhances the reader's understanding and engagement with the topic. Visual elements like images and graphics provide a visual representation of the information, enabling the reader to "see" the content. Additionally, audio components like audio recordings or video clips can help the reader "hear" the information, making it more engaging and immersive.

Therefore, option B, Multimedia, is the correct choice as it allows the reader to both see and hear the information presented in an informative essay.