The correct answer is A.
All of these signs would indicate substance abuse as they are all negative behaviors and would raise a red flag that something needs to be done to get him back to a healthy state and drug free. There are some signs in the other options that would indicate the same but not altogether as a whole.
Answer:
You can replace "sum" with an addition sign.
Explanation:
sum=add together
Answer:
c quantity hope that helps...
