Which Olympic sport do you like the most? Why?
I like rhythmic gymnastic the most, because it is a very nice venue .
I like rhythmic gymnastics the most, because it has a very nice venue .
its very good.
I would say 'Gymnastics'. Someone who does it is a Gymnast - they do Gymnastics. There is no Gymnastic.
A venue is the place where it is performed - do you mean because it is 'nice to look at' or 'nice to watch'?