'A dark horse' means:
✓ Correct Answer: Option B
Dark horse: an unknown person with hidden abilities.
📚 About This English Practice Question
This 2-level English question from the Idioms & Phrases topic is part of One Paper Preparation's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.
How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free English practice test or use flashcards for spaced repetition review.