B. What do New Orleans citizens fear?

Union troops officially take possession of New Orleans, completing the occupation that had begun four days earlier.

The capture of this vital southern city was a huge blow to the Confederacy. Southern military strategists planned for a Union attack down the Mississippi, not from the Gulf of Mexico. In early 1862, the Confederates concentrated their forces in northern Mississippi and western Tennessee to stave off the Yankee invasion. Many of these troops fought at Shiloh in Tennessee on April 6 and 7. Eight Rebel gunboats were dispatched up the great river to stop a Union flotilla above Memphis, leaving only 3,000 militia, two uncompleted ironclads, and a few steamboats to defend New Orleans. The most imposing obstacles for the Union were two forts, Jackson and St. Phillip. In the middle of the night of April 24, Admiral David Farragut led a fleet of 24 gunboats, 19 mortar boats and 15,000 soldiers in a daring run past the forts.

Explanation:

acid rain is the answer

answer; standardization;