3. Demand is the desire to own something and the ability to pay for it. Why must both of these conditions be present in order to have true demand?

i honestly speaking this is too long

the old way of life was represented by superstition, an angry god, and absolute submission to authority. the thinkers of the age of reason ushered in a new way of thinking. this new way championed the accomplishments of humankind. individuals did not have to accept despair. science and reason could bring happiness and progress. kings did not rule by divine right. they had an obligation to their subjects. europeans pondered the implications for nearly a century. americans put them into practice first.

i would say b. research typically uses a variety of sources