Choose the correct word for the following structure.
Incapable of being read.

The correct answer is Option B (illegible).

Key Points:
• Standard One Word Substitution for handwriting or print.
• 'Illegible' specifically describes handwriting or print that is impossible or incapable of being read due to poor formation, fading, or untidiness.
• (1) 'Unreadable' generally refers to a book/text that is too dull, tedious, or badly written to enjoy.
• (3) 'Unintelligible' means incapable of being understood/comprehended.
• (4) 'Illegal' means against the law.
• Key Takeaway: 'Illegible' means handwriting/print that is impossible or incapable of being read.