A. Rule of thumb
B. Calculated choice
C. Wrong assumption
D. Assumption
🧠 Explanation:
The phrase “a rough estimate” means a rule of thumb, an approximate calculation. Knowing this helps students improve English vocabulary, ensuring clearer communication. Understanding idioms is useful for essays, exams, or conversations in school. This phrase is common in planning or math contexts. This skill is key for English classes, helping students express approximations accurately. Learning idioms enhances language skills, making it easier to analyze texts or communicate effectively in academic projects, professional tasks, or daily scenarios where clear expressions improve understanding and clarity.
