Creating separate intents for 'order_status', 'return_policy', and 'product_info' allows the model to better understand the specific needs of the user and provide more accurate responses. Adding specific utterances for each intent helps the model recognize and classify the user's messages correctly. Option A would not be effective as it would not allow the model to differentiate between different types of inquiries. Option C is incorrect as using pre-built entities alone would not be sufficient to capture the specific intents. Option D is not a viable approach as creating separate intents for each utterance would result in a highly fragmented and inefficient model.