Why does a person feel slightly lighter at the equator than at the poles?
(a) The Earth’s radius is larger at the equator, so the value of g is smaller there
(b) The Earth’s radius is smaller at the equator, so the value of g is larger there
(c) The higher air pressure at the equator pushes upward more strongly, so a person’s apparent weight is less
(d) Because the equator is closer to the Sun, the Sun’s gravitational pull partly cancels Earth’s pull there, reducing weight