It entails being out of touch with reality, where your optimism isn't grounded in comparison to the situation you're in.
For example, imagine climbing Mount Everest and you underestimate the weather, which are underestimating obstacles and risks.
Two word phrases are:
1. The sum of 8 and b.
2. b plus eight.
The principal reason for the economic boom in the United States after the Second World War was a shortage of consumer goods combined with a reserve of purchasing power in the form of accumulated savings.
Answer:
The answer is A. Double. Hope this helps.
