Which of the following is not a herbicide?

Which one of the following is a herbicide?

Which one of the following is a herbicide?

Which one of the following is a herbicide?

Which of the following is a herbicide?

Which of the following is herbicide?

Which of the following is herbicide?

Which of the following herbicides and defoliant were used by the US military in its herbicidal warfare programme during the Vietnam war?

Which of the following plants have been genetically engineered to provide herbicide tolerance ?

Among the following herbicide is