One-word substitution (book-obsessed person): Select the precise term for a person excessively interested in reading books—often to the exclusion of other activities. Context: The word commonly describes a studious or introverted reader who spends most time with books. Instruction: Choose the most accurate single-word substitute.

Given data

• Phrasing: ‘‘A person interested in reading books and nothing else.’’
• We need the colloquial, widely recognized noun.

Concept / Approach
A bookworm is someone extremely fond of reading, often prioritizing books above other pursuits.

Elimination
Bookworm — avid, single-minded reader; best fit. ✅Scholar — learned person; may engage in varied activities beyond reading. ❌Student — learner; not necessarily book-obsessed. ❌Book-keeper — accounts clerk; unrelated to love of reading. ❌

Usage
‘‘She is a bookworm, happiest in a library corner.’’

Final Answer
Bookworm