“To fight tooth and nail” means:

A. To oppose resolutely 
B. To lodge a formal protest
C. To have a physical fight
D. Both A & B

🧠 Explanation:

The proverb “to fight tooth and nail” means to oppose resolutely, reflecting intense effort against opposition. For language students, this highlights idiomatic language, making it a key topic for studying English expressions, cultural phrases, and effective communication. It emphasizes fierce resistance in conflicts. Understanding idioms improves fluency in academic or conversational contexts. It’s essential for crafting compelling narratives or arguments. Studying this proverb offers insights into metaphorical language, enhancing expressive skills in writing, speaking, or journalism, ensuring vivid depiction of struggle or determination in various scenarios, crucial for language mastery and cultural understanding.