Barrier islands serve as the first protection for the mainland. They take the first hit and slow down the hurricane/reduce impacts. Because of this, lack of barrier islands would cause the mainland to be flooded even more, which would cause land loss.
of course it does many things in history caused how we are now, such as ww1 without it there would be no ww2 or no cold war ww1 was a big turning point in history cause it set out the rest of the 20th century
(a) is the answer in studying this actually!
D bc that’s the right answer
