Final answer:
The teacher's activities support the principle that fluency in decoding allows students full comprehension, critical reading, and engagement with varied texts.
Step-by-step explanation:
By engaging students in activities such as reader's theater, repeated readings, modeling fluent reading, and providing opportunities for independent reading, the teacher best demonstrates an understanding that a reader who can fluently and automatically decode words can give full attention to comprehending a written text. This principle is fundamental to literacy development as it allows students to focus on critical thinking, understanding relationships among ideas, and the interplay between verbal and nonverbal elements when reading. Moreover, these activities help in familiarizing students with a diverse range of texts, enabling them to identify how conventions in various genres are shaped by purpose, language, culture, and reader or audience expectation. As students become more fluent readers, they are better equipped to engage in reading for inquiry, learning, and communicating, all of which are vital for their overall literacy growth.