4. which of the following statements is correct?

a. four-way switches have the word "on" engraved on their handles.
b. four-way switches contain internal wiring.
c. three-way switches have two common terminals.
d. three-way switches are wired internally.

Which statement best describes gravity? it is the force that repels only very small objects. it is the force that acts between objects with zero mass. it is the force that sometimes acts only on very large objects. it is the force that acts between any two objects in the universe.