Answer:
A. Walking in the same direction as moving traffic.
Explanation:
Why would you, do that in the first place? The other options all seem like safe precautions to do.
A should be your answer because because both drugs can create a chemical to large (depending on the drug) to handle and that can cause liver damgage
but if you read evrything i said "drug synergism" is when too chemicals are combined and get larger
now drug addiction also makes sense but before you could get addicted you might die
Physical Appearance I would say because what you look like helps people understand you a bit but doesnt totally describe who you are.
Avian flu, Anthrax, SARS [Severe Acute Respiratory Syndrom]
