The most accurate answer is C. B could be true, but it's not just breathing in
Answer:
the balloon is filled with the 8.5 litre of helium. temperature is 294 kelvin.
party starts at 4 p.m.
the temperature rises 305 kelvin.
the new volume = 4 litres
Velocity would be an answer
Naw! Common sense should be common which is why it's called common sense...