"Monoculture" is when a giant farm grows only one single type of crop (like only one type of banana) over a huge area. Why is this a risk to global food security?
(A) People get bored of eating the same food every day.
(B) If a specific pest or disease hits that one crop, the entire food supply could be destroyed.
(C) It makes the harvest season too short for the workers.
(D) One type of plant produces too much oxygen at once.