Final answer:
The correct answer is c) The star is close to the Earth. Parallax is a phenomenon used to measure distances between Earth and nearby stars.
Step-by-step explanation:
The correct answer is c) The star is close to the Earth.
Parallax is a phenomenon used to measure distances between Earth and nearby stars. When a star has a large parallax movement, it means that the star appears to shift its position significantly when viewed from different points in Earth's orbit around the Sun. This indicates that the star is relatively close to the Earth.
For example, if you hold your finger at arm's length and look at it with one eye and then the other, your finger will appear to shift its position. Similarly, when astronomers observe stars from different sides of Earth's orbit, they can measure the parallax movement of the stars, and stars with larger parallax movements are closer to Earth.