Concept:Neural networks in AI are computer systems inspired by the human brain.Explanation:Neural networks are designed to recognise patterns, learn from data, and solve problems in a way similar to how the human brain works.They are used in modern technology for tasks such as image recognition, speech processing, and decision-making.Therefore, their main role is to simulate human brain function for learning and problem-solving.Answer:D. simulate human brain function for learning and problem-solving.