Question: You work for a website that enables customers see all images of themselves on the internet by uploading one self-photo. Your data model uses 5 characteristics to match people to their foto: color, eye, gender, eyeglasses and facial hair. Your customers have been complaining that get tens of thousands of photos without them. What is the problem?

1. You are overfitting the model to the data
2. You need a smaller training set
3. You are underfitting the model to the data
4. You need a larger training set

Answer: The correct answer of the above question is Option C:You are underfitting the model to the data