Answer:
The correct answer is A, Sediment.
Step-by-step explanation:
The Yangtze is the River. It flows in China. It is the longest river in Asia and the fourth longest river in the whole world. It is the only longest river which flows in a country. This river contains the largest deposits of sediments. Sediment is the matter which rests at the bottom of the water. Yangtze is the fourth largest carrier of Sediment in the world. It is basically the accumulation of sand and dirt that settles at the bottom of the flowing water.