grammar - When to use know and knows

I'm confused in whether to write know or knows in the following statement:-
"The ones who are included know better."?

Also explain the difference between the two, thanks.

Answer

As this is very basic, I think you should've just googled it. But here's the answer:

It is the same as any other verb, we put an 's' at the end when we're talking about a singular noun, e.g. drink: He drinks coffee every morning; They drink too much when they get together on weekends.

Therefore, since 'ones' is plural, we use know: "The ones who are included know better".

Hope this helps.