The correct option is B Parthenium (Compositae)
Parthenium hysterophorus or better known as the 'Congress grass' is the deadliest weed because it was imported into the country by the time when Congress government was in India. Parthenium is known to be a deadly weed for both humans and animals alike apart from being dangerous for the flora of the region including the crops. One plant of Parthenium can produce around 25-30,000 seeds, that can propagate rapidly with wind and if it comes in contact with humans, it can cause severe skin and respiratory allergies, such as eczema and asthma.