Which should I use: Foundation, Bootstrap or HTML5 Boilerplate?

Bootstrap is best and easiest way for frontend . Because you can may any layout with almost all devices responsivesness desiign . 

Twitter bootstrap is a JavaScript and  css framework which helps you build responsive Web sites.  Html5 is  a mark up language standardised by the world wide Web consortium for implementation by browser vendors.

Bootstrap is the king.

- Easy to understand.

- Cater resposive requirements widely

Go with Bootstrap.

Because 

Easy to understand and work.

No need to worry about reponsive, its a mobile first framework.

lots of developer support in stackoverflow.

I would prefer bootstrap because all the resources are available online and its easy to understand. Bootstrap is which I am confident and comfortable for development. 

I Would Prefer Bootstrap Because Widely used by developers and tons of resources are available online.

Very Good Community Support.

Definately go with Bootstrap.

Because 

Easy to learn. (Tons of tutorials on youtube).

Easy to understand.

Mobile first framework.

Very large developer commnuity.

Go with Bootstrap  It is a ReadyMade Framework Easy to use. It is a Combination of CSS and HTML.

My vote is for BootStrap.