Question: You work for a startup that is trying to develop a software tool that will scan the internet for pictures of people using specific tools. The chief executive is very interested in using machine learning algorithms. What would you recommend as the best place to start?

1. Using an unsupervised machine learning algorithm to cluster together all the photographs.
2. Crate a data lake with an unsupervised machine learning algorithm.
3. Use a combination of unsupervised and supervised machine learning to create machine-defined data clusters.
4. Use supervised machine learning to classify photographs based on a predetermined training set.

Answer: The correct answer of the above question is Option D:Use supervised machine learning to classify photographs based on a predetermined training set.