What are interrelated indicators of reading fluency?

The correct choice underscores the essential components that make up reading fluency: accuracy, rate, and prosody.

Accuracy refers to the ability to read words correctly without mistakes, which is fundamental to comprehension and ensures that the reader is interpreting the text as intended. Rate measures the speed at which a reader can read, balancing fluency and comprehension; reading too slowly can interfere with understanding, while reading too fast may lead to errors and loss of meaning. Prosody involves the rhythm, intonation, and expression a reader uses, which enhances understanding and engagement with the text. This aspect of fluency contributes to conveying meaning and emotion in the reading experience.

In contrast, the other choices, while important in the context of literacy and learning, do not specifically define the mechanics of reading fluency. Understanding, interest, and engagement relate more to a student's attitude towards reading, while vocabulary, syntax, and semantics relate to comprehension and language development. Motivation, strategy, and reflection focus on broader cognitive processes rather than the specific indicators of how fluently a student can read.