• Laboratory crash simulations assess how helmets will perform in real world accidents.
• These evaluations measure the helmet’s ability to absorb forces, maintain its structure, and meet required safety certifications.

• The recognised impact test among the options provided is option C, Notch.
• The Brinell test measure material hardness, Erichsen test measures the properties of metals (including hardness and wear) while the punch test looks at material behaviour under stress.

\(\Rightarrow  C \)