Multiple choice How many calories does an adult need to take in a day? 100 -500 cal. 500-1 cal. 1500 -2000cal. 2000-2500 cal. Reveal answer Fill a bubble to check yourself D Correct answer Explanation Adults typically need 2000-2500 calories per day to maintain weight. This varies based on activity level, gender, age, and metabolism. Option D represents the standard dietary recommendation for adults.