A Star Is 80 Pc from the Sun $\degree$
D) 80 Arcseconds

Multiple Choice

A star is 80 pc from the Sun. Its apparent motion against the background sky, that is, its stellar parallax, as a result of Earth's motion through 1 au is

A) 0.0125 arcsecond.
B) 0.0125 arcminute.
C) 0.0125 radian or 0.72 $\degree$ .
D) 80 arcseconds.