What effect does the cam control have on the brake during an aircraft arrestment?

The cam control is an essential component in managing the hydraulic systems of an aircraft, particularly during scenarios like arrestment, where deceleration is critical. When the cam control restricts hydraulic fluid flow, it leads to an increase in pressure within the hydraulic system. This is important because increased pressure allows the brakes to engage more effectively, providing the necessary stopping force needed to successfully halt the aircraft.

In scenarios where the cam control is engaged, the restriction of fluid flow optimizes the brake system's performance, ensuring that the braking force is not only appropriate but also timely. Therefore, this mechanism is crucial for achieving desired braking actions during an aircraft's arrestment. The other options do not accurately reflect how the cam control functions in this context, as they either imply a decrease in pressure or an inadequate response in hydraulic fluid management, which would not achieve the necessary performance during critical stopping situations.