Which statement best explains why women were needed as pilots during ww2

During WW2, the United States faced a severe shortage of pilots, and leaders gambled on an experimental program: Train women to fly military aircraft so male pilots could be released for combat duty overseas.

Explanation:

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation: