Plants Are Sometimes Used for Phytoremediation in Areas Where the Soil

Multiple Choice

Plants are sometimes used for phytoremediation in areas where the soil has been contaminated with heavy metals. Suppose the Acme Remediation Company is proposing to remediate a contaminated area that you wish to restore. Acme presents you with the following data as evidence of their company's ability to remediate soil.

-Which would provide the best evidence that Acme's phytoremediation really works?

A) data on heavy metal content of plants grown in normal soil versus soil contaminated with heavy metals
B) testimonials from former Acme customers
C) a list of plant species that tolerate heavy metals
D) a list of publications of the scientists that work at Acme