PLEASE HELP
The question is in the file.

Aboy jumps into a cold swimming pool and his body tempature goes down hus muscles ,blood vessels

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere, b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify, d)anaerobic bacteria kept thriving with more oxygen

Select the correct answer from each drop-down menu proteins are