Answer:
- In the 1920s, there was a HUGE technological advance, meaning people were starting how to program and build machines, and using those newfound skills to their advantage,
Explanation:
Basically, people built machines to do work faster, which made more products, which meant more customers. People didn't have to spend a huge amount of money to profit a huge amount of money. That means poor/unemployed people got jobs, and it went down like clockwork, as more customers came, they needed more people, making more jobs, making more money, making the economy skyrocket.
Answer: C) Poison dart frogs are brightly colored and poisonous to animals that eat them.
A is not the answer because that line explains where frogs get their names from, and introduces the topic of bright colors talking about the frog's bright eyes. B links the topic of bright colors to the fact that they serve as a warning sign for poison or danger, and D supports this topic by stating that bright colors help red-eyed tree frogs survive in nature. C, on the other hand, introduces a new species of frog that is not talked about during the rest of the essay, and it does not support the idea of colors being crucial in the red-eyed tree frog's surivival.
