10. Which of these is NOT mentioned as a solution to forming challenges in Africa? A. Drought-resistant seeds B. Mobile apps for farmers C. Solar-powered irrigation D. Robotic harvesting equipment

The correct answer is D. Robotic harvesting equipment.<br /><br />Explanation: The question asks for the option that is NOT mentioned as a solution to forming challenges in Africa. Options A, B, and C are all mentioned as solutions to address challenges in agriculture in Africa. Option D, 'Robotic harvesting equipment,' is not mentioned as a solution in the context of the question.