Question: In the HBO show Silicon Valley, one of the characters creates a mobile application called Not Hot Dog. It works by having the user take a photograph of food with their mobile device. Then the app says whether the food is a hot dog. To create the app, the software developer uploaded hundreds of thousands of pictures of hot dogs. How would you describe this type of machine learning?

1. Reinforcement machine learning
2. unsupervised machine learning
3. supervised machine learning
4. semi-supervised machine learning

Answer: The correct answer of the above question is Option C:supervised machine learning