Venus is called the red planet ?
No, that's Mars. Due to the red 'soil' there it has a distinctly reddish tinge in the sky. (And that's why it's called Mars, from the Roman god of war - red being associated with war)
Venus is covered in heavy clouds, so it reflects a lot of light from the sun - that's why it's the brightest. But definitely not red.
No, that is Mars.
Venus is the brightest
Susila is right.