Which approach best enhances students' oral language development during a read-aloud?

Using think-pair-share for main idea discussion during a read-aloud is particularly effective for enhancing students' oral language development. This approach promotes active engagement among students as they are encouraged to think critically about the content they have just heard, articulate their thoughts, and share their ideas with a partner before possibly sharing with the larger group.

This collaborative learning technique fosters communication skills, as students must listen, respond, and reflect on their ideas and those of their peers, which directly contributes to their oral language development. It also allows for the reinforcement of vocabulary and understanding of the main ideas presented in the text, as students discuss and clarify concepts with one another.

In contrast, while the other options may support literacy in different ways, they do not specifically target the oral language development in such a direct, interactive manner. Selecting unfamiliar words focuses more on vocabulary acquisition without necessarily promoting dialogue. Rereading the story reinforces comprehension but does not significantly enhance oral skills in a social context. Writing a response encourages reflection and may help with written literacy but lacks the interactive, spoken component that is so vital to developing oral language skills.