Which one of the following was introduced in the country to eradicate prickly pear (Opuntia dilleni) weed

Answer: Option B

Prickly pear is a declared weed with a long life span under the weed management act. The biological control of this disastrous weed involved the intentional introduction of the cochineal insect, Dactylopius ceylonicus from Brazil in 1975 from Brazil.