HTML and CSS Certification Practice Test

Setting a maximum width for an image in CSS is most effectively achieved by utilizing the `max-width` property. This property allows you to define the upper limit for the width of an image, ensuring that it does not exceed a specified size while still being responsive to the size of its container. For example, if you set `max-width: 100%;`, the image will scale down to fit within its parent container while preventing it from stretching beyond its natural dimensions or the width you defined.

Using `width: value;` sets a fixed width for the image, meaning the image will always render at that size regardless of its container or the actual image dimensions. Similarly, `min-width: value;` sets a minimum width, which does not address the need for a maximum limit. The `height: value;` property manages the height of the element but does not affect its width constraints directly.

Thus, employing `max-width` is the appropriate choice for controlling an image’s size while allowing it to adjust responsively.