Hyperparameters in linear models

Which of the following is a hyperparameter in the linear model from your last exercise? The breast_cancer_data has again been loaded and the linear model has been built just as before:

linear_model <- lm(concavity_mean ~ symmetry_mean,
                    data = breast_cancer_data)

Note that hyperparameters can be found in the help section for a function, while model parameters are part of the output of a function.