The toxicity of zinc in soil is reduced by adding

Answer: Option A

The toxicity of zinc in the soil is reduced by adding Superphosphate. Phosphorus in superphosphate causes zinc content in soil to decrease.
Zinc toxicity is a medical condition involving an overdose on or toxic overexposure to zinc. The general symptoms are stunting of the shoot, curling and rolling of young leaves, death of leaf tips and chlorosis.