Which of the following best describes a primary feature of the WEST-E tests?

The primary feature of the WEST-E tests is that they evaluate knowledge in specific subject areas. These assessments are designed to measure an individual’s understanding and competencies in distinct subjects that are essential for effective teaching. This focus ensures that prospective educators are adequately prepared to teach the content required in Washington state's curriculum and fulfill the educational needs of their students.

While there may be elements of practical teaching experience and contributions from state educators in the development of the assessments, the core emphasis of the WEST-E is on assessing subject-specific knowledge. Thus, the correct choice highlights the main purpose of the tests, which is to ensure that educators possess a deep understanding of the content they will be responsible for teaching.