Correct option is D
Correct option: (d) Irish famine
· “Black 47” refers to the worst year of the
Irish Potato Famine, caused by
Phytophthora infestans.
Other options:
· (a) Great Bengal famine – Occurred in 1943.
· (b) Coffee rust – Major outbreak in Sri Lanka in 1869.
· (c) Downy mildew of grapes – Epidemics occurred in late 19th century.