Answer: Yogurt contains good bacteria.
Step-by-step explanation: Taking antibiotics for a longer duration of time kills the good bacteria present in the the gut of the human being. The gut of the human being consists of good bacteria as well as bad bacteria.
The good bacteria present in the gut of the human beings helps in the digestion of the food. Yogurt is a good source of good bacteria as it contains lactobacillus which is known as good bacteria that keeps the gut healthy.