The correct answer is not be concerned because France is a low-risk country
Traveler's diarrhea is usually caused by consuming contaminated food and water when travelling abroad. In order to avoid traveler's diarrhea, it is recommended to drink boiled water that kills any germs and other sources of contamination, and avoid eating fresh fruits and vegetables. However, this only applies to less developed and poorer countries since they are likelier to have unhygienic food and water.