Best Blog Site for SEO

Which one is the best blog site for SEO purpose?

Wordpress,blogger and many more blog site for seo purpose.

Best free blogging Site are below.

Blog
Wordpress
Blogger
Medium
Wix

Some Best Blogging site are

Blogger
Wordpress
Wix
Weebly
Medium
Tumblr

Blogger.
wix.
tumblr.

Blogger
WordPress
Weebly
Tumblr

Thanks
Christine Breese

Wordpress is best site for blogging for SEO.

In my opinion blogger is best option because its Google blogging platform. https://www.instapaper.com/p/DavidBennett