Answer:
Amount of sleep
Explanation:
Sleep is vital for performing any kind of task in our everyday lives. The other answers aren't as important.
By keeping the care at the highest possible level that you can offer and going above and beyond the job.
The answer is C. influenza, chicken pox, and colds because influenza, chicken pox, and colds (called rhinovirus) are all caused by viruses. Food poisoning is not a virus, athlete's foot is a fungal infection, and strep throat is a bacterial infection.
No it is not the main energy source