Please identify what type of error the following sentence includes: Twenty one action items are on today's agenda.
A) Capitalization
B) Punctuation other than commas or semicolons (including hyphens and apostrophes)
C) Redundancy
D) Commas
E) Semicolon

Question

Quizplus · Accepted Answer

Spelled out numbers require a hyphen so the sentence reads: Twenty-one action items are on today's agenda.

Please Identify What Type of Error the Following Sentence Includes