(a) Both Statement 1 and Statement 2 are correct.
A confusion matrix is an evaluation metric (Statement 1) and it is also a handy presentation/record that helps evaluate model accuracy (Statement 2).
Both statements are correct because the confusion matrix serves dual purposes: it is listed as a popular classification metric, and it is described as "a handy presentation of the accuracy of a model" — i.e., a record that aids evaluation. Neither statement contradicts the source material.