A rigid body rotates counterclockwise about a fixed axis for exactly one second. Each of the following pairs of quantities represents an initial angular position and a final angular position of the rigid body. Which choice represents the lowest angular speed?

Question $6$Answer

a$.$

$3$ rad, $6$ rad

b$.$

$1$ rad, $1$ rad

c$.$

$1$ rad, $5$ rad

d$.$

$0$ rad, $6$ rad