Tech A says that the brake pedal uses leverage to multiply foot pressure. Tech B says that when braking hard while moving
forward, the vehicle's weight transfers to the rear wheels, increasing their traction. Who is correct?

Tech- A is correct

Explanation:

Leverage is defined as using a tool to gain mechanical influence. The measure of the benefit gained depends on what kind of lever is used and how it is utilized.Leverage is designed in such a way that it can reproduce the force from your leg many times before any force is transferred to brake fluid.The brake pedal size and the measure of leverage received depends on the overall design of the brake system. The second-order lever is used in the brake pedal. The brake pedal applies leverage to populate the force employed to the master cylinder. The effort needed to drive a load depends on the corresponding distance of the load and the work from the fulcrum. The proportion of load and work is known as mechanical advantage.

Do you need to draw this out?

Iactually don’t know but i know someone you can ask