Explanation:
When relaying the details of what happened in a conflict or when trying to solve it, it is best and most helpful when people are informed of the specifics as to not miss any vital details that might impact the decision or resolution.
Do you have a picture of the diagram?
Its has to be C
cause D is dealing with water
now B makes sense cus because a member of a population will be affected by a diesise (definition)
and A makes 1% sense its kinda the samething as B dealing with infections
now C. deals with mesquitos