How to choose best answer?

Question

It doesent always give me the option

Answer 1

i always get a email from yahoo answer that tells me my question have to vote answer,

do u have the email from yahoo answer.

if not just check ur question in 4 days

Answer 2

After four hours you can choose one.

Answer 3

You need to choose within the 3 days you first asked it I think.

If you don't, the public then gets to vote who gets the best answer.

~Follower of the Way.