What does the US Jack consist of?

The US Jack, which is used by the US Navy, is characterized by 50 white stars arranged in nine rows on a dark blue field, representing the 50 states of the United States. This distinctive design differentiates it from the national flag, which is flown on land and in various ceremonial contexts. The stars symbolize the unity and strength of the nation, while the blue field signifies vigilance, perseverance, and justice.

The other options do not accurately represent the US Jack. The second option describes the national flag of the United States, which features 13 stripes and a blue canton. The third option refers to a design commonly associated with maritime flags, and the fourth option does not correspond to any officially recognized flag of the United States. Thus, the description of the Jack with its specific elements of the stars on a blue field confirms its correct identification.