b$.[10$ points$]$ The example below shows one potential model for the data points $($shown as red dots$).$ Can this model be improved? If so$,$ draw a new line that represents the improved model in the figure and explain why it is a better model.

c$.[5$ points$]$ and Given a dataset that contains the information shown below. Your goal is to develop a Machine Learning approach that predicts chance of heart disease. Based on the given information in the table below, which columns identify potential features, which identify labels?