Epidemiologists are scientists who study diseases within populations of people. In essence, these public health professionals analyze what causes disease outbreaks in order to treat existing diseases and prevent future outbreaks.
Therefore the most precise answer is
D) it states both their analytical work (to study causes and patterns) and also what they pretend to achieve(to contain or treatment) but doesn't fully answer the question "Why their concern is so diverse"
A) Does not only give a full valid definition but answers the question "why they concern is so diverse (extensive)?"
because they study "ALL" diseases..
Thus, the correct answer is A
Answer is A. D-Trying to fit in is them doing asking you to do it an you do even if you've never done it.C- Feeling as though " everyone is doing it" is alot similar to trying to fit in. B- Wanting to be like is the same thing as trying to fit in just said differently.
Let her know how you feel, because maybe she misses you too?
A. False. Antibiotics cannot kill virus,
B. False. Depends on the virus, The flu is a virus and you see symptons- fatigue muscle pain and weakness
c. False they can live and do live in mucous membranes
D. False adults get viruses all the time. for example the flu, HIV, and now Zika
all are false