The correct choice from the options is "B".
The Siege of Yorktown, also called the Battle of Yorktown, the Surrender at Yorktown, German Fight or the Siege of Little York, finishing on October 19, 1781, at Yorktown, Virginia, was a definitive triumph by a joined power of American Armed force troops headed by General George Washington and French Armed force troops led by the Comte de Rochambeau over an English Armed force headed by Lieutenant General Charles Cornwallis.
Answer:
B. mercury
Explanation:
Mercury is one of the most common toxic chemicals that can be found in contaminated fish. This is because mercury has become a common pollutant in rivers and other waterways since it it commonly used in mining and industrial operation, and these operations end up throwing the mercury into the waterbodies, where the fish absorb it.