The correct answer is C. Greater than 1.
The rigidity factor is a measure of how stiff a tire is. It is calculated by dividing the tire’s load carrying capacity by its inflation pressure. A higher rigidity factor indicates a stiffer tire.
Tires with a higher rigidity factor are generally more responsive and provide better handling. However, they are also more likely to be uncomfortable to drive on rough roads.
Tires with a lower rigidity factor are generally more comfortable to drive on rough roads. However, they are also less responsive and provide poorer handling.
The rigidity factor for a tire pressure greater than 7 kg/cm2 is greater than 1. This is because the tire’s load carrying capacity increases as the inflation pressure increases.
Option A is incorrect because the rigidity factor is not equal to 1.
Option B is incorrect because the rigidity factor is greater than 1.
Option D is incorrect because the rigidity factor is not zero.