Answer:
The folk music resurgence of the 1960s gave rise to a number of topical artists with social and political agendas, such as Bob Dylan, Joan Baez, Phil Ochs, Tom Paxton, Buffy Sainte-Marie, Judy Collins, Arlo Guthrie, and others.
Hi! I would say the answer is D. providing services
the name given to bends in a river is 'meanders'
During WW2, the women stayed and worked in the factories, to support the men fighting overseas. They used the assembly line to build ships, planes, and weapons. The men also worked in the factories. Women also rationed and sent food to their husbands overseas. This was the time period where women would work in the industry, or work as a WACs.
The best and most correct answer among the choices provided by the question is the third choice "natural monopolies"
Natural monopolies<span> arise where the largest supplier in an industry, often the first supplier in a market, has an overwhelming cost advantage over other actual or potential competitors; this tends to be the case in industries where fixed costs predominate.</span>
I hope my answer has come to your help. God bless and have a nice day ahead!