Which of the following sentences contains an inconsistency?

Which sentence does not contain an error in comma usage?

Read passage and identify the type of error or inconsistency it contains.

Which entry does not follow best practice for indexing the names of titled persons?

Which one is not a duty generally performed by a proofreader?

Compare manuscript copy to the final proof copy and identify the section with error.

Select the line that contains an error in grammar or usage.

Which sentence contains an agreement error?

Which sentence contains an error in sentence structure?

Which sentence is correct in terms of number usage, style, or consistency?

Which sentence contains an error in grammar or usage?.