Final answer:
Humans and the "good" bacteria in the digestive tract have a mutualistic relationship that benefits both parties.
Step-by-step explanation:
The symbiotic relationship exhibited between humans and the "good" bacteria in the digestive tract is mutualism. In mutualism, both parties benefit from the relationship. In this case, humans provide a suitable environment and nutrients for the bacteria to thrive, while the bacteria assist in breaking down food and producing essential vitamins.
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