Answer:
D. People learn to eat less meat.
Explanation:
Rangelands are commonly used for grazing animals like cattle, sheep, and goats. If more rangelands will be converted for urban developments, this will lead to a fewer number of animals being kept as livestock. This means that "people will learn to eat less meat" because of the livestock's declining number and increasing expense.
Urban developments will lead to a decrease amount of available land for grazing and an increase in food cost. People won't be needing efficient lawn mowers because they don't have enough space for lawns.