What is a responsive web architecture, and how does it compare to fixed and liquid formats?

When comparing different methodologies used to develop web architectures and formats, it is best to start by describing each of the approaches and their characteristics. You can then compare and contrast them. Your answer should conclude with a statement about which one of these you normally use and why you prefer it.

"Responsive web architecture refers to a website or application's ability to adjust its format based on the user's device to access the website. It allows for the format to be flexible and adjust for orientation, size, and the font size used. Fixed formats are rigid and will not adjust. This provides stability when the website is being viewed on a computer but may be ineffective if viewed on a mobile device. Liquid sites are similar to responsive architectures but less flexible because they use rates as relative marketers for the width of website elements. The responsive web architecture is the most flexible, although it takes additional programming resources."