A) Humidity
B) Temperature
C) Atmospheric pressure
D) Composition of air
Correct Answer: C
Solution :
When a straw is used for drinking, air is expelled out from the straw due to which there is a decrease in the air pressure inside the straw. Therefore, the liquid in the container enters the straw, rises up and comes out from the straw. So, we are able to drink the juice/liquid. When we stop using the straw the process stops.
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