Which of the following herbicides has been banned due to its toxicity?

The selected herbicide, 2,4,5-T, has been banned due to its significant toxicity and association with serious health risks, including effects on human health and the environment. It is a member of the chlorophenoxy herbicides, which were used extensively for weed control, particularly in the 1960s and 1970s. However, it was discovered that 2,4,5-T was contaminated with dioxins—specifically, TCDD—during its manufacturing process. Dioxins are highly toxic compounds that can cause severe health issues, such as cancer and reproductive problems, leading to widespread bans on 2,4,5-T in many countries.

In contrast, while options like 2,4-D and glyphosate have faced scrutiny and debates regarding their safety, they have not been banned outright in the same manner. Dibromoethane (EDB), though restricted, has not been subject to the level of bans that 2,4,5-T has experienced primarily due to its dioxin contamination and toxicological profile. Understanding these distinctions is crucial when considering herbicides and their regulatory status concerning human and environmental health.