Question

A series of federal regulations requiring changes to the oil refinement process took effect in the 1990s. Which of the following U.S. states was least affected by the policies?
California
Texas
Mississippi
Florida

Answer 1

All the States mentioned, except Florida, were deeply affected. Florida wasn't as affected, though, because its production of oil and oil exports, during that time, were significantly lower than those of the other states. That being acknowledge, the State the was the least affected was Florida.

Answer 2

Good Morning!
 
The least affected was the state of Florida, due to its low level of production in refineries, compared to all other states.