Answer:
A. Threat of new entrants will be low
Explanation:
Micheal Porter's Five Forces is a framework designed for the sole purpose of analyzing a company's competitive environment. Based on this information it can be said that the cumulative learning and experience effects of a company will most likely affect these forces by making the threat of new entrants extremely low since it will make competing with the already established company extremely hard and lead to almost certain failure for the entering company.
The top 20% percent of U.S. households receive approximately 86% of the total U.S. Income.
Explanation:
The reason that the top 20% percent of U.S. households receive approximately 86% of the total U.S. Income is that the wage divide is effected and kept up by the institutional laws and the way american businesses work.
There is not enough incentive on healthcare and welfare schemes which keeps the poor of the country poor while the rich and the upper middle class are designed to not fall off from their stature with better bankruptcy laws and pardons.
It was used to protect Athens from attacks :)
Is life that exists only off our planet,
No aliens have been seen/found yet, but it is a strong theory as the universe is very large.