Correct Response: A. In the scenario described in this item, the teacher collects data about students' vocabulary development across multiple language modes (e.g., listening, speaking, reading, and writing). In addition, analyzing students' use of vocabulary in multiple contexts allows the teacher to monitor students' vocabulary development in multiple dimensions, such as their depth of understanding of new vocabulary (e.g., as evidenced in their vocabulary journals) and their command, usage, and retention of new vocabulary (e.g., as evidenced during class discussions and in their daily writing). Option B is incorrect because the teacher does not use anecdotal or theoretical data to track students' progress. Option C is incorrect because the assessment strategies the teacher is using are not easily quantified. Option D is incorrect because the scenario only mentions evidence that the teacher is collecting with respect to students' vocabulary development and not each essential component of reading.
