A child plays with a toy in which a smal, air- and liquid-filled balloon floats

Question

A child plays with a toy in which a smal, air- and liquid-filled balloon floats within a bottle that is closed and completely filled with water (see diagram below). The bottle is flexible such that when the child squeezes it, the bottle can just slightly compress. Upon squeezing the bottle, the balloon sinks. Why does this happen? Squeeze balloon is compressed upon squeezing, thus increasing its density. A. The B. The water in the bottle is compressed, ncreasing its density and, thus, the buoyant force on the balloon. Atmospheric pressure increases uporn squeezing, forcing the balloon to sink. D. As the balloon sinks, the depth decreases the hydrostatic pressure, causing the balloono sink further.

Explanation / Answer

Answer should be A
air in balloon is easily compressed thus increasing the density of balloon.
This is the reason balloon sinks

B is wrong because if water was compressed, buoyant force increases and hence the balloon should float

C and D is also not correct, it is not related

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