What is an important aspect of reading fluency according to Bottom-Up Theory?

The correct focus on automatic processing of letters and words highlights a fundamental aspect of reading fluency grounded in Bottom-Up Theory. This theory posits that reading proficiency develops from the ability to recognize and process the smallest units of language, such as letters and words, automatically. When readers achieve automaticity in recognizing these units, they can decode text more efficiently, allowing them to focus on comprehension and meaning rather than spending excessive cognitive resources on word recognition.

In this context, automatic processing is crucial because it enables readers to progress seamlessly through text, facilitating smoother reading and reducing the cognitive load. When letter and word recognition becomes automatic, readers are better positioned to engage with the text as a whole, ultimately supporting their fluency.

Other options do not align with the fundamental principles of Bottom-Up Theory. Understanding every nuance of the text and the interpretation of complex sentences are more aligned with higher-level comprehension skills, while memorization of high-frequency words, while certainly beneficial for fluency, does not encompass the core tenet of automatic processing that underpins Bottom-Up Theory's approach to reading development.