Answer:
200 meters
Step-by-step explanation:
The given graph shows average amplitude of waves from 2009 to 2011. It is given that a structural engineer is using this table to design a wall to protect a city near the ocean.
The wave that is caused due to motion of wind across the water surface are ocean waves.
From the graph it is clear that the maximum height of ocean wave is more than 150 m. So, the structural engineer must design a wall that has height more than 150 m. Hence, the correct option is (d) " 200 m ".