Question

To
a text, a reader should explain the text concisely using the reader’s own words.

Answer 1

Here are clearer ways to say that, plus a brief note on the wording:

Rewrites
- "A reader should concisely explain a text in their own words."
- "When reading a text, the reader should summarize it briefly in their own words."
- "Explain the text briefly, using your own words." (imperative)
- "Readers should provide concise explanations of texts using their own words."

Note: "To a text" is awkward — use "of/for/about a text" or rephrase as above. Use "their" for gender-neutrality.