1. PART A: Which TWO of the following best identify the central ideas of
this article?
A) Many people and groups contributed to the development and
refinement of mass-producible Liberty ships, highly formidable B-
29s, and the atomic bomb.
B) Throughout World War II, more Americans were killed or wounded
while working in industrial settings in the United States than in
combat.
C) Despite being in a relatively lacking condition before the United
States entered World War II, American industry developed and
progressed considerably thereafter.
D) The widespread adoption of the assembly line system allowed
industrial productivity to skyrocket within the United States.
E) The creation and use of the atomic bomb was the most significant
event of the Second World War.
F) The United States' improvements upon Liberty ships were the
nation's most important contribution to the war effort in Britain.

A). Many people and groups contributed to the development and refinement of mass-producible Liberty ships, highly formidable B- 29s, and the atomic bomb.

E). The creation and use of the atomic bomb was the most significant event of the Second World War.

The above two statements most effectively identify the key ideas of the text about the role people played in the advancement and concentration of liberty ships that generate mass productivity and the development of atomic bomb and its use had been significant in WW II.
These are the key focus ideas that the author attempts to elaborate throughout the article using a wide variety of details, facts, and evidences.
These ideas inform the readers about how people put their part in development of ships and atomic bomb and how its use can be worthy in world war.

Thus, options A and E are the correct answers.

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