Astronomers Use the Geometric Parallax by Precisely Measuring the Angles

Astronomers use the geometric parallax by precisely measuring the angles at which a star's position changes, astronomers use trigonometry to calculate the _________ nearby stars less than _________ away from Earth.

A) distance to; 1 light-year
B) temperature of; 500 light-years
C) distance to; 500 light-years
D) Astronomers do not use the geometric parallax, only meteorologists use it.