To create a horseshoe magnet, take a bar magnet and bend it into a u-shape. The creates a strong magnetic field in the region between the two poles at the end of the horseshoe magnet. An electron is shot through a spot somewhere between these ends of a horseshoe magnet. The electron : a) is unaffected by the field.
b) direction is changed.
c) speed is changed.
d) is attracted to one of the poles, and repelled by the other.
e) is repelled by both poles, and therefore is turned back.