What do you do to show a letter should be capitalized?

Which of the following is the proofreader's mark to indicate align horizontally?

Which of the following describes the proofreader's mark to indicate when a proofreader should "let it stand"?

According to the Chicago Style, which of the following is the proofreader's mark to indicate when something should be moved to center?

What does a circle around the letters "SP" mean?

Which of the following is the proofreader's mark to indicate where an apostrophe or single quotation mark should be inserted?

Which of the following sentences contains an error in punctuation,?

The following represents a complete bibliography for a scholarly paper. Review the entries and identify the line that contains an error.

Which of the following sentences contains an error in grammar or usage.

Read the following passage and select the line that contains an error in grammar or usage?

Which of the following represents the correct way to write the publication information for a cited work in a bibliography?