Which occurs during inhalation? the diaphragm relaxes. the rib cage expands. air is pushed out of the body. lung volume decreases.

The correct answer is "The rib cage expands."

The other three options occur when you are exhaling, or breathing out.

you must remain stopped until the stop signal is retracted and the red lights are turned off. approaching traffic in the opposite roadway of a divided highway shall not be required to stop, even if the school bus has the stop-arm extended and the alternately flashing warning signal lamps on.

explanation:

the universal gravitation equation. since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. if the mass of one of the objects is doubled, then the force of gravity between them is doubled.