The sentence that most effectively shows what kind of person is Harrison's uncle is "In addition to working full time in his thriving pediatric dental practice, Uncle Ted regularly provides free dental care to those in need."
If the purpose is to describe a person, the best is to include details related to:
Based on this, the best sentence to include is "In addition to working full time in his thriving pediatric dental practice, Uncle Ted regularly provides free dental care to those in need". This is because:
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