The correct answer is C. Arsenic.
Arsenic is a naturally occurring metalloid that is found in rocks, soil, and water. It can also be found in some pesticides and herbicides. Arsenic is a highly toxic substance that can cause cancer, heart disease, and other health problems.
Zinc is a metal that is essential for human health. It is found in many foods, including meat, poultry, fish, beans, and nuts. Zinc is also found in some supplements. Zinc is important for immune function, wound healing, and growth.
Phosphate is a mineral that is found in many foods, including meat, poultry, fish, dairy products, and eggs. Phosphate is also found in some supplements. Phosphate is important for bone health and energy production.
Detergent is a substance that is used to clean clothes and other surfaces. Detergents are made up of chemicals that can be harmful to the environment. Detergents can pollute water and soil. They can also harm fish and other wildlife.
Arsenic is
the most poisonous pollutant in water because it is a highly toxic substance that can cause cancer, heart disease, and other health problems. Zinc, phosphate, and detergent are not as poisonous as arsenic.