Data Visualizationmedium
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A heat map displays survey responses by age group and satisfaction level:

| Age Group | Dissatisfied | Neutral | Satisfied | |---|---|---|---| | 18–30 | 8 | 12 | 30 | | 31–50 | 6 | 18 | 46 | | 51–70 | 14 | 16 | 30 |

Which age group has the highest proportion of satisfied respondents?