* Parallax: Parallax is the apparent shift in the position of a star against the background of distant stars as the Earth orbits the Sun. Closer stars have a larger parallax angle than distant stars. This is the most direct method for determining the distance to nearby stars.

Let's look at the other options:

* Absolute Magnitude: Absolute magnitude is a measure of a star's intrinsic brightness, how bright it would appear if it were 10 parsecs away. It doesn't directly correlate with distance.

* Redshift: Redshift is the stretching of light waves as an object moves away from us. This is related to the expansion of the universe, not the distance of nearby stars.

* Blueshift: Blueshift is the compression of light waves as an object moves towards us. This is the opposite of redshift and also not directly related to the distance of nearby stars.

In summary: Parallax is the only measurement that directly increases as a star gets closer.