1. The liquid did not fall through postcard due to-a) liquid pressureb) air pressurec) magicd) waterproof material

1. The liquid did not fall through postcard due to-a) liquid pressureb

1.	1. The liquid did not fall through postcard due to-a) liquid pressureb) air pressurec) magicd) waterproof material
Answer» ANSWER is AIR PRESSUREC