Final answer:
A star with a right ascension of five hours is located five hours to the east of zero hours right ascension, corresponding to 75° eastward from the vernal equinox.
Step-by-step explanation:
A star with a right ascension (RA) of five hours is east of the zero-hour right ascension. Right ascension measures the east-west positions of celestial bodies in the sky from the vernal equinox and is expressed in either degrees or hours. Since one hour corresponds to 15°, a star with RA 5h has traveled 75° eastward from the vernal equinox point. This RA measurement does not relate to the star's north-south position, only its east-west location in the celestial sphere. The correct statement is therefore that the star is five hours to the east of zero hours right ascension.