A bottle of perfume is opened at one end of a room. A person sitting at the other end smells the perfume within a few minutes.
Which of the following explanations is true?
a.The molecules of perfume moved directly from the person to the perfume bottle.
b.The molecules of perfume moved randomly in all directions, but the overall movement was from the bottle to the person.
c.The molecules of perfume moved randomly in all directions, but the overall movement was from the person to the bottle.
d.The molecules of perfume moved directly from the perfume bottle to the person.
