Scientists have found that childhood exposure to bacteria and germs is one of the main reasons for the dramatic increase in diabetes cases in people under the age of 5 in recent years, and that children living in rural areas have more opportunities to interact with bacteria because of earlier exposure Pets get along with allergies, asthma, and eczema, and the chances of getting rid of them are very low, so an environment that destroys bacteria too thoroughly may actually harm children's health. Which of the following, if true, would strongly support the above conclusion? ? ["Newborn baby's body and body are sterile, but after starting to drink milk and drinking water, the bacteria will take the opportunity to enter the body.", 'Bacteria on human skin mostly protect and create a unique body odor for everyone.', "Most bacteria are good for your health, and people's health and longevity cannot be separated from normal flora.", "Many harmful bacteria are usually safe with the human body. When the body's immunity decreases, the bacteria begin to invade the human body."]