A grocery store has a scale in the fruit and vegetable section for the convenience of its customers. Which would give the most reliable measurement of the weight of a bag of fruit?

Weigh the bag on the scale three times and take the smallest of the three weights

Weigh the bag on the scale three times and take the largest of the three weights

Weigh the bag on the scale three times and take the average of the three weights

You can't tell which of the three choices above would be most reliable without knowing the true weight of the bag.