The microbiome is:

The microbiome is:

• A. Trillions of microorganisms that reside in our mouth, stomach, and intestines, in addition on our skin.
• B. Our microbiome can have profound effects on our mood, emotion, and behaviors.
• C. All the above
• D. Made up of species of bacteria, fungi, and viruses in which we coexist in harmony.

Answer: (C)

The microbiome is the community of trillions of microorganisms that live on and inside us, in places like the mouth, stomach, intestines, and on the skin. These communities are made up of bacteria, fungi, and viruses, forming a complex ecosystem that we coexist with. They can influence more than digestion, including mood, emotion, and behavior, through pathways like the gut–brain axis. Because these points are all accurate, the statements collectively describe the microbiome well.

The microbiome is the community of trillions of microorganisms that live on and inside us, in places like the mouth, stomach, intestines, and on the skin. These communities are made up of bacteria, fungi, and viruses, forming a complex ecosystem that we coexist with. They can influence more than digestion, including mood, emotion, and behavior, through pathways like the gut–brain axis. Because these points are all accurate, the statements collectively describe the microbiome well.