Answer:
B) Fluid Layout
Explanation:
Fluid layout on page will resizes itself whenever window size changes. We need to define page area as percentage rather then fix pixel width.
For Example
If user want to fill the content area with 480px, by using fluid layout user can create a layout to fill 40% of the web page area. By using percentage, content can extend or shrink with respect to the screen size.
Example in StyleSheet (Css) format
Fixed Layout
.content { width: 480px; }
Fluid Layout
.content { width: 40%; }