Adjective
plain to see (not comparable)
evident, obvious
It was plain to see that the trouble in the southern States arose out of the exclusion of the better whites from the electoral suffrage no less than from the admission of the most ignorant blacks. Woodrow Wilson
Could you be The most beautiful girl in the world? Could you be? It's plain to see. You're the reason that God made a girl. Oh, yes, you are. Prince (musician)