B, C and D are the correct answers hope I can help!
More Americans were able to buy homes after the WWII because of the purchasing power of the American Dollar. In order for the country to experience a drastic economic change, it had to change its policies about taxes, cost of living, and personal wages of its people. So during that time period, people had a lot of money and decided to change their old ways of living in the city and moving into the suburbs to buy a lot and build their own houses there. They found that life was more peaceful and quaint as compared to the city life that's why there was a boom in suburban life after the WW.
In car assembly, robots keep workers from exposure to fumes from welding and painting, as well as weld flash and the noise of stamping presses. Automotive robotics cut accidents and injury claims by removing workers from these dirty and dangerous tasks and environments.