Explanation:

- Direction cosines describe the angles a line makes with the x, y, and z axes.

- A direction cosine of (0, 1, 0) means:

- The cosine with the x-axis is 0.

- The cosine with the y-axis is 1.

- The cosine with the z-axis is 0.

- This means the line is completely aligned with the y-axis, not the x or z axes.

- So, it is parallel to the y-axis.

Options Analysis:

- Option 1: Parallel to x-axis ( The cosine with x is 0)

- Option 2: Parallel to y-axis ( Green tick — this is correct)

- Option 3: Parallel to z-axis ( The cosine with z is 0)

- Option 4: Equally inclined to all axes ( All cosines would be equal if that were true)