Step 1: Understanding Colour Application.
Some colours, like watercolours, are typically applied with a brush, while others, such as pastels, can be applied directly to the surface without a brush. Pastels are pigment-based sticks that can be used directly on paper, canvas, or other surfaces. They do not require a brush to apply.
Step 2: Evaluating the Options.
- Option (1): Watercolours are typically applied with a brush.
- Option (2): Pastels are applied directly to the surface using the stick itself, not a brush.
- Option (3): Oil paints are generally applied with a brush.
- Option (4): This option is incorrect as pastels can be applied without a brush.
Conclusion:
Therefore, the correct answer is (2) Pastel.