The weight of the lightest person in the group = 90 pounds
The diagram attached contains the stem-and-leaves plot referred to in the question.
The stem-and-leaves plot represents the weight distribution for a group of people.
The weight of each person in the group can be determined from the plot
The lightest person in the distribution can be determined by identifying the smallest leaf under the smallest stem
The smallest stem = 9
The smallest leaf under stem 9 = 0
Therefore, the lightest person in the group weighs 90 pounds
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