Which of the following describes EPSPS inhibitors?

EPSPS inhibitors are a class of herbicides that target a specific enzyme called enolpyruvyl shikimic acid-3-phosphate synthase (EPSPS), which is crucial in the shikimic acid pathway. This pathway is vital for the synthesis of aromatic amino acids, such as phenylalanine, tyrosine, and tryptophan, which are necessary for protein production and plant growth.

When EPSPS inhibitors are applied, they block the activity of this enzyme, effectively halting the production of these essential amino acids. As a result, the growth and development of the plant are negatively impacted, leading to symptoms such as chlorosis, stunting, and eventually plant death if the exposure continues.

This mechanism is what makes option B the correct choice, as it accurately describes how EPSPS inhibitors function by blocking amino acid synthesis, which is critical for overall plant health.