In a biology class, your friend had to read Jared Diamond's essay The Worst Mistake in the History of the Human Race, which details the drawbacks of sedentary life and agriculture. Your friend wants to know why humans continued to farm in the face of disease and other issues. You reply that
a. agriculture led to an increase in peaceful relations between groups because there was less competition for food.
b. having reliable access to food and being able to produce more calories per unit of land available led to population increase.
c. farming for food was better for the environment than was hunting and gathering.
d. All of the above