Which of the following question types must be graded manually?

Paragraph questions require manual grading because they involve open-ended responses that cannot be objectively evaluated by a computer. Unlike multiple-choice or true/false questions, paragraph answers demand human interpretation to assess content, grammar, coherence, and relevance. Single-select questions, like multiple-choice, are automatically graded as there is only one correct answer predefined in the system. Short answer questions can sometimes be automatically graded if the expected answer is very specific and can be matched against keywords or exact phrases, but they often also benefit from manual review to catch nuanced correct answers. However, paragraph questions inherently demand human judgment.