Answer:
As the device is intended to reduce the chance of collision between cars, the test used has to address this issue hence the answer is A. B tests the amount of damage which is not what the device is intended to do. C addresses the device functionality with respect to the speed of the car which is irrelevant as the device should reduce chance of collision irregardless of the car's speed. D would be useful to test the device although it will not be the most useful to test if the device works as intended, this would probably be used in a later stage of testing to determine the performance and consistency of the device, for example.
Many people supported the war by many volunteer efforts. Labor efforts have changed many had to ration over Gasoline, clothes and food to support the men at war. Many of the durable resources such as cars, housing goods, and appliances were banned until the war was over. Many people also have quit their jobs, schools etc to work at industrial centers. Prices and wages were also very controlled. This was also a good time for women to step up and work to take the jobs the men had as well! There is so much more but these are a few of them.
I hope this helped you!
Answer:
programs aimed at reducing poverty leves in the city