When an interviewer asks this type of question, they are seeking to learn whether you are familiar with the tools and processes that they already use in their operations. Additionally, they may want to see if you're capable of recommending new tools or processes which they may consider adopting. One of the most desired soft skills employers look for is creativity. You can use your answer to this question to demonstrate your creativity and innovation skills.
"I have done quite a bit of research into HTML5 frameworks. The ones that I prefer include Foundation, Skeleton, HTML5 Boilerplate, KickStart, and Montage. These are very similar but have unique features that I use depending on the type of website I'm developing."
"Using responsive frameworks when developing a web page helps to ensure that the page will be responsive and that the elements used to create the image are what I want to include on the page. The frameworks also help to reduce the amount of time required to develop the page. There are many frameworks available, but the ones I prefer include Montage, SproutCore, Zebra, and CreateJS. I use the framework that will produce the best results for the type of web page I'm working on"