Answer:
Option B, American settlers in California staged a revolt with the help of the United States navy, is the right answer.
Step-by-step explanation:
The Mexican–American War was a war fought between the United States and Mexico. This war took place in the period between 1846 to 1848. During this war, the American settlers in California launched a revolt, this revolt came to be known as the Bear Flag Revolt. The settlers rebelled against the government of Mexico and proclaimed a California as an independent republic. In this revolt, the Navy of the United States helped the rebels.