Select the option that can be used as a one-word substitute for the given group of words.
Which cannot be read.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Illegible.
"Illegible" is the appropriate one-word substitute for "which cannot be read" because it captures the essence of unreadable or indecipherable text or writing.
The other options do not suit the sentence's context.