Which word means following rules or customs, often in an exact and proper way?

• A. Casual
• B. Formal
• C. Informal
• D. Evaluate

Answer: (B)

Think about describing behavior that sticks to rules and customs in a precise, proper way. That idea is captured by the word formal. When something is formal, it follows established rules, etiquette, and propriety, and it’s suited to official or serious situations. You might use formal language in a letter, wear formal attire to a ceremony, or follow formal procedures in a meeting.

Casual and informal describe the opposite—relaxed, everyday style that doesn’t require strict adherence to rules. Evaluate means to judge or assess something, which isn’t about following rules or customs. So, formal is the word that best fits the description.