Which of the following is always a characteristic of line?

• A. It has direction and can indicate movement.
• B. Length always predominates over height or depth.
• C. It can be thin or thick.
• D. It can be used to define shapes.

Answer: (B)

The essential idea being tested is that a line is defined by its length. In most contexts, a line is a one-dimensional element whose primary, always-present characteristic is its length; height or depth aren’t inherent properties of a line. That’s why the statement that length dominates over height or depth captures the core attribute of a line: it fundamentally has length, while height and depth apply to other dimensions or to objects, not to the line itself. The other features—having direction or indicating movement, being able to be thin or thick, and being used to define shapes—can occur with lines but aren’t universal to every line or are contingent on how the line is drawn or used.