Thiobacillus denitrificans is a species of bacteria that obtains its energy from carbon dioxide and inorganic compounds such as nitrogen in its environment. It is used in bioremediation (natural cleansing) of groundwater that contains excess nitrate, allowing the nitrates to be removed. Through what process does Thiobacillus denitrificans help bioremediate groundwater?

Denitrifcation

Explanation:

Thiobacillus dentrificans is the gram-negative bacteria that is considered the chemoautotrophic according to its mode of nutrition.

The Thiobacillus is now used by the bioremediation scientists in the remediation of the wasteland as its ability to convert the reduces nitrogen forms that are nitrates and nitrites back to its dinitrogen state which escapes back into the atmosphere thus completing the nitrogen cycle.

This process of conversion is known as the denitrification and on the basis of this, the bacteria are named dentrificans.

Thus, denitrification is the correct answer.

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i think the answer would be d