To determine the approximate weight of the child when they are 6 months old from the exponential function graph, refer to the plotted curve at the 6-month point on the x-axis.
Without the actual graph to observe, I can suggest that if the graph shows a steady increase and lands near one of the given response options at the 6-month mark, you would choose that corresponding weight.
If, for instance, the curve reaches around the values indicated (20, 16, 17, or 0 pounds) at 6 months, you would select the closest number.
Since I cannot see the graph, please check the curve at the 6-month mark and choose the weight that aligns best with the point on the graph.