Answer:
Options (1) and (2)
Step-by-step explanation:
Beach nourishment usually refers to the repairing of the beaches by constructing seawalls, sea fences, growing vegetation, creating sand dunes, in order to prevent sand erosion. It is important to do so because the sea waves carry the sand particles seaward thereby affecting the coastal areas.
In order to set up the above beach nourishing features, the two most important factors that are to be kept in mind are the time and the amount of money it will require in order to complete the project. Considering these two factors, if constructions are done then it will be completed in the appropriate time. This will help in mitigating beach erosion.
Hence, the correct answers are options (1) and (2).