Preparing images for the web involves several steps to optimize them for online use. The correct answer, option 'D', states that preparing images for the web involves reducing the size of an image, zipping the image, and cropping the image. Let's break down each of these steps in detail:

Reducing the size of an image:
- When preparing images for the web, it is essential to reduce their size to ensure faster loading times. Large image files can slow down the loading speed of webpages, leading to a poor user experience.
- To reduce the size of an image, you can use image editing software or online tools that allow you to resize the image dimensions and compress the file size without significantly affecting its quality.
- By reducing the size of an image, you can ensure that it loads quickly on various devices, including mobile phones and tablets, where internet speeds may vary.

Zipping the image:
- Zipping an image involves compressing it into a smaller file size using a file compression format like ZIP or RAR.
- This process is beneficial when you need to share multiple images or a collection of images on the web. Compressing them into a single zip file helps reduce the overall file size and makes it easier to download or upload the images.
- However, it's important to note that zipping an individual image does not directly optimize it for web use. It primarily helps in organizing and compressing multiple images into a single file.

Cropping the image:
- Cropping an image involves removing unwanted parts or areas from the original image to focus on a specific subject or to improve composition.
- When preparing images for the web, cropping can be useful to remove unnecessary background or empty spaces, making the image more visually appealing and impactful.
- Additionally, cropping an image can also help reduce its file size by eliminating unnecessary pixels, resulting in a smaller image file to load on webpages.

By combining these three steps of reducing the image size, zipping the image (if necessary), and cropping the image, you can effectively prepare images for the web. These optimizations contribute to faster loading times, better user experiences, and efficient use of bandwidth and storage resources.

Option D) All of the above is the correct answer