When you step on a weighing scale at noon, earth pulls you downward and the overhead sun pulls you upward. the reason the sun's pull doesn't decrease your weight at noon is

a) the sun's pull on you is negligibly small.
b) the weighing scale is calibrated only in earth weight.
c) you, the scale, and earth are in free fall (in orbit) around the sun.
d) the sun's pull is cancelled by the gravitation of other celestial bodies.
e) of tidal effects in the "solid" earth.