Answer:
Well I know it will definitely make sense at least for someone that understands what you are writing about.
Explanation:
This might just be my own opinion but i think it really is true.
The answer is B. military materials and equipment
Income inequality of the U.S. has reached the highest peak since the Great Depression. Americans who make 40 times of much are in the top 1% than the bottom 90%. The population in 1978 had 0.1% claim to nearly 7% of the wealth and a 22% increase by 2012. Other nation's income inequality has had an armful of harmful outcomes, debt was also one of the higher rates, crime, and mental illness. Researchers want to understand this better by investigating how his inequality might have an influence of those of know of it.
I don't know how well it is. Kinda hard to summarize this. Hope I at least helped a bit.
Answer: The last sentence
Explanation: In the sentence about the puppy, bright is another word for “smart”. The last sentence can be changed to say “The inventor’s smart idea”, which means that the way “bright” is used in that sentence is the way that word was used in the sentence about the puppy.