Read the sentence from the section "The attack began at 6 a.m." Which phrase from the section helps you understand the meaning of "airstrike"?

Their mission was to enter Pearl Harbor before the airstrike, remain underwater until the attack started, then cause as much damage as possible.

A near the island of Oahu

B the first wave of planes

C entrance to Pearl Harbor

D remain underwater

B the first wave of planes

Although the U.S. Pacific Fleet was crushed, some larger ships were not in the harbor at the time of the attack.

What does "U.S. Pacific Fleet" refer to in the sentence?

A the leader of the United States Army

B the planes that attacked the United States ships

C the place where the United States was attacked

D the group of United States ships in Pearl Harbor

D the group of United States ships in Pearl Harbor