Why was the attack on Pearl Harbor significant?

Question $30$ options:

a$)$

It was a surprise attack that immediately caused the United States to enter the war and brought the isolationist movement to an abrupt end.

b$)$

It demonstrated the Japanese naval commander$$s belief that the only way Japan could defeat the United States was through a long war.

c$)$

It was a highly successful victory for the Japanese militarily due to its destruction of U$.$S$.$ aircraft carriers.

d$)$

It caused the war henceforth to become more localized in the Pacific and much less of a global conflict.

e$)$

It showed that the United States was too quick to lift embargoes on Japan and other warring nations