Which of the following is not a factor that is increasing the risk of a widespread famine before 2050? A. water scarcityB. overpopulationC. agricultural shift to biofuel productionD. increased crop diversification

Option D

Explanation:

Famine refers to the extreme scarcity of food due to inflation or crop failure or population imbalance.

It is accompanied by malnutrition, starvation, epidemic, and increased mortality. It generally happens in a large geographical area. Many countries have even faced deaths due to famine.

Factors including water scarcity, overpopulation, agricultural shift to biofuel production result in famine.

However, the increase in crop diversification is not a factor that is increasing the risk of a widespread famine before 2050.

So, option D. is correct.