This activity is likely to promote students' vocabulary development primarily by helping the student -

The activity is likely to promote students' vocabulary development primarily by helping the student memorize definitions of common words. When students focus on memorizing definitions, they build a foundational understanding of vocabulary that is crucial for language development. Memorization allows students to recall and utilize these words in various contexts, which is essential for effective communication and comprehension.

While other approaches mentioned, such as practicing spelling through repetition or engaging with the text through silent reading, can contribute to vocabulary development, memorizing definitions specifically targets the comprehension of meanings and encourages the usage of these words in language. This understanding lays the groundwork for deeper vocabulary acquisition, allowing students to expand their language skills further as they navigate more complex texts and concepts.