Answer: Cells, tissues, organ, system
Explanation:
Cells are the basic unit of all living organisms. e.g neuron
Tissues are made up of similar cells that perform the same function e.g blood
Organs are made up of similar tissues that perform the same function e.g Liver
System are made up of similar organs that perform the same function e.g digestive system consists of mouth, oesophagus, small and large intestine etc
Well, the reson they do this is too look at the pupeles and if they dialate when the light hits there eye then they have not suffered trama to the brain but sence she did see trama then the eyes did not dialate which tells her there is trama in the brain, hope this helps!
