As given in the Maryanne Wolf's Five reading stages, the characteristic of a reader that is fluent is: "using reading as a tool to acquire new knowledge" (Option A)
<h3>Who is a fluent reader?</h3>
A fluent reader is one who has mastered the sounds and basic concept of words and their pronunciation and meaning.
It is thus right to state that "using reading as a tool to acquire new knowledge" is a sign that one is a fluent reader.
