Answer:
b. Greenwashing
Explanation:
Greenwashing refers to misleading customers by portraying fake compliance with environmental laws by a company. In such cases the company at fault showcases it's products as environmental friendly, made using natural ingredients which actually is not the case.
Misleading refers to employing fraudulent practices intended to deceive the customers with an intention to increase the sales volume.
In the given case, the company in question labelled it's products as environmental friendly despite knowing such is not the case as the facts suggest otherwise.
Thus, this is a case of Greenwashing.