Answer: Water scarcity harms agriculture the most in Northern Africa.
Explanation: This is because farming there relies heavily on water for growing crops, but there isn't enough water available. When there's not enough water for crops, they don't grow well, leading to less food and money for the people. This also affects animals that need water. Since farming is an important way people make a living, not having enough water can hurt their income and make it harder for them to have enough food. This problem is made worse by changes in the climate that make water even scarcer. People are trying different ways to use water more efficiently and choose crops that can survive with less water, but it's a complex problem that needs many solutions.