The normal human heart beats an average of 60-100 times per minute at rest. Option 1 states 82 beats, which falls within the normal range. Option 2 states 75 beats, which is also within the normal range. Option 3 states 72 beats, which is again within the normal range. Option 4 states 85 beats, which is slightly higher but still falls within the normal range. Therefore, the correct answer is option 3, stating that the human heart normally beats 72 times in a minute.