Which of the Following Is the Least Disruptive Strategy for Removing

Multiple Choice

Which of the following is the least disruptive strategy for removing toxic heavy metals from a soil?

A) heavy irrigation to leach out the heavy metals
B) application of sulfur to lower the soil pH and precipitate the heavy metals
C) adding plant species that have the ability to take up and accumulate heavy metals
D) inoculating soil with mycorrhizae to avoid heavy-metal uptake