Answer:
A
Explanation:
The N (2.2 N) is Newton. Newton is weight.
Spread of disease is density dependent because it is more severe the greater the population density as the disease would spread more easily. If there is low population density it would spread slower.
When a family faces a situation that is too hard to solve by itself, it is a sign of strength to ask for help.
E.coli because e coli is a bacteria.
