If the Daytime Sky Were Not So Bright, How Fast

Multiple Choice

If the daytime sky were not so bright, how fast would an observer see the Sun move across it with respect to the stars as it moves through one full circle in 1 year?

A) about 1° per day
B) about 15° per hour
C) The Sun would never appear to move with respect to the stars in the sky.
D) exactly 24° per day or 1° per hour