Which writing approach would best address the purpose and audience of this prompt?

What is the role of communication within groups of people with different backgrounds?

How did ancient civilizations develope its agriculture and protect its population

Explain how the poverty level is determined. on edinuity* the possible answer may the poverty level is defined by the u.s. bureau of the census and it is determined by calculating the cost of providing an adequate diet. this number is then multiplied by three because research has indicated that poor people spend a third of their income on food.