I think option C is correct by my opinion.
Answer:
tend to believe the United States should stay out of foreign countries
Silent gen.- tend to see the United States as a world guardian of freedom and democracy
The Wright brothers flew their first plane in 1903 and the first continental railroad opened in 1869 if you subtract those two you would get 34 years after
The correct answer to this open question is the following.
“Man is multidimensional and changing” means that humans have evolved from a primitive form of humanoids thousands of years ago, into a more capable and sophisticated creature that has taken advantage of their brains to create a complex society full of diversity, culture, traditions, and customs.
Human evolution had had its ups and downs, great moments, cruel moments, and questionable moments of fear, war, oppression, and slavery. But that historical moments have taught us lessons to improve and be better and has taken us to modern days where humans are capable of doing many things at the same time, thanks to the use of modern technology and communications.