Final answer:
The Continental Congress established the Stars and Stripes flag as the National flag on June 14, 1777, which is not listed in the provided options. The question contains a typo, as 1776 should be revised to 1777.
Step-by-step explanation:
The Continental Congress established the Stars and Stripes flag as the National flag on June 14, 1777. Therefore, the correct answer to when the Continental Congress established the Stars and Stripes as the National flag is option b) 1776. However, this is not the accurate option; rather, it is a typo in the quiz since 1777 is not provided as an option. June 14, 1777, is the correct year when the flag was authorized by the Continental Congress. It's important to note that this was during a period when the creation of a new government was being considered, following the Declaration of Independence in 1776. The flag became a symbol of the new nation and its desire for independence from Great Britain.