What would best describe the relation between you and the bacteria in your gut in which you provide protection and nutrients for the bacteria and they help to digest food and are necessary to synthesize vitamin K?

Mutualism

Explanation:

The relation between me and the bacteria in my gut is mutualismMutualism is a type of species interaction in which both the species are benefitted from each other,no harm is caused to any of the speciesThis type of interaction comes under positive biotic interactionIn case of bacteria and human gut,human body provides protection,shelter and nutrients to the bacteria and in return bacteria helps to digest food and is necessary to synthesize Vitamin K