A particle is released from rest in a uniform electric field and then moves under the influence of the electric field. The particle is a proton. Which is true? Choose the best answer.
a. The proton accelerates in the direction of the electric field.
b. The proton decelerates in the direction of the electric field.
c. The proton moves perpendicular to the electric field.
d. The proton remains stationary in the electric field.
