Final answer:
A star with a parallax angle of 0.1 arcsecond is likely to be nearby.
Step-by-step explanation:
A star with a parallax angle of 0.1 arcsecond indicates that the star is relatively nearby. Parallax is a method used to measure the distance to stars, where the shift in a star's position is observed from opposite sides of Earth's orbit. The closer the star, the larger the parallax angle. Therefore, a star with a parallax angle of 0.1 arcsecond is likely to be nearby.