Scientists Believe That the Direction Birds Go When Migrating Is

Multiple Choice

Scientists believe that the direction birds go when migrating is guided in part by _____.

A) the stars in the night sky
B) the Sun during the day
C) the magnetic field of the Earth
D) only the stars in the night sky and the Sun during the day
E) the stars in the night sky,the Sun during the day,and the magnetic field of the Earth