Step 1: Understanding Primary Colours.
Primary colours are the fundamental colours that cannot be created by mixing other colours. The primary colours in the RGB (Red, Green, Blue) model are red, blue, and green. In the RYB (Red, Yellow, Blue) model, the primary colours are red, yellow, and blue.
Step 2: Verifying the Options.
- Option (1): Green is a secondary colour when blue and yellow are mixed.
- Option (2): Red is one of the primary colours, making it the correct answer.
- Option (3): Orange is a secondary colour, made by mixing red and yellow.
- Option (4): Violet is a secondary colour, made by mixing red and blue.
Conclusion:
Therefore, the correct answer is (2) Red.