Brake fluid can be used to activate the brakes because it:
a. acts as an excellent lubricant
b. does not compress under pressure
c. does not need to be replaced
d. is able to absorb excess heat

B. Does not compress under pressure

Explanation:

Brake fluids are fluids used to transmit the pressure applied from the brake pedals to the brakes. Fluids are used because they are not as compressible when compared to gases i.e., there is no loss of power when the pressure is applied.

Brake fluids are generally glycol-ether based. They do not corrode the metal parts and have a very high melting point.

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.