The statement that they are characterized by rapids and waterfalls is incorrect about floodplains.
Explanation:
All other points mentioned holds for flood plains:
Most of the floodplains are low lying areas
They are generally, the land areas which are adjacent to streams and rivers
They are subjected to repeated influx or flooding.
They can be simply characterized by a relatively smooth land area on whose boundary lies water stream or river which overflows or results in flooding at the time when water is high.
<span>The student's experiment is modeled after mass wasting, which is also known as mass movement or slope movement. One of the factors of mass wasting is gravity. The water from the hose weighs down the soil and causes the clumps of soil to move downward through the stack of rocks.</span>
The issuing of official records, such as birth certificates, and the administering of justice are most commonly performed at the municipal level of government in the US. The correct option among all the options that are given in the question is the third option or option "C".