Identify a True Statement About Health Behaviors That Affect and Change

Identify a true statement about health behaviors that affect and change the microbiome.

A) C-section and formula for an infant's microbiome are better than natural birth and breastfeeding.
B) Research on gut-brain axis suggests that avoiding dirt and "germs" is always a good thing for the immune system.
C) Even though kissing can transfer harmful germs, it also transmits beneficial probiotics between people.
D) Research suggests that living germ-free actually decreases the stress response.