A. 85
B. 80
C. 65
D. 75
🧠 Explanation:
Reeya’s marks of 65, 67, 78, 82, and 85 out of 100 have an average of 75. Add the scores (65 + 67 + 78 + 82 + 85 = 377), then divide by 5 subjects (377 ÷ 5 = 75). Knowing how to calculate averages is useful for students tracking grades or professionals analyzing data in various fields.