D. having trouble relaxing
Answer:
Technology has gotten better over the years...
Explanation:
Technology has gotten better over the years eith experience and research, Modern medicine is what it is today thanks to technology, and the people who work day and night researching and etc. People also have more access in asking for help like a phone and have nearby clinic's and hospital's.
Because, when an infection exist in the human body it tends to spread, so if the cells stayed in one space then the infection would have a much greater opportunity to severly make that person very ill before the cells could even get to the infection.
