Which of the following is considered the best response to beach ...

[formula1]

Which of the following is considered the best response to beach erosion?
  1.Breakwater
  2.Groin
  3.Importing Sand
  4.Seawall
 
Question 2

Coastal erosion is greatest when the
  1.coast has no offshore islands.
  2.shore is made of hard rock, such as granite or basalt.
  3.coast is only infrequently attacked by large waves.
  4.shoreline has a great deal of tidal variation.

[sokh]

Answer to Question 1

3

Answer to Question 2

1