What happens to beaches over time?

a.) beaches undergo little change-any sand the is eroded is added back by rivers that flow nearby.

b.) beaches undergo little change since any buildup of landforms will be broken apart by the waves.

c.) they all undergo a number of sudden changes when tsunamis git their shores.

d.) they can change suddenly, such as after a storm, or they can change slowly, such as when high tides erode a shoreline cliff.

the answer is d i took the test be cause i go to a k12 onlie school

Option (D)

Explanation:

The beaches are defined as the landform that is oriented along the side of the large water bodies such as seas and oceans. They are dominantly comprised of sand and other rock particles such as pebbles and gravels.

These beaches are often affected by factors such as, the change in the sea level, that are caused due to the tidal effect, and the occurrence of storms and tsunamis.  

The shoreline of the beach shifts towards the inland areas when the sea level rises and the opposite happens when the sea level drops. They are suddenly affected when a storm occurs, eroding the sand particles towards or away from the water body.

Thus, the beaches or shorelines are continuously affected due to the above factors.

Hence, the correct answer is option (D).