All the non-zero vectors are called ______.

The correct answer is option 3. proper vectors.

All the non-zero vectors are calledProper vectors.

Proper vectors refer to any vector that is not the zero vector. In mathematics, a vector is a quantity that has both magnitude and direction. The zero vector, denoted as 0 or \(\vec{0}\), has a magnitude of zero and does not have a specific direction. Any vector that has a magnitude greater than zero and a specific direction is considered a proper vector. Therefore, all non-zero vectors, regardless of their direction or magnitude, fall under the category of proper vectors.