Answer:
Some source their produce from reliable suppliers who follow standard sanitary protocols and keep proof of their practices.
Step-by-step explanation:
The chosen sentence is the one that highlights the proper practice for the prevention of food contamination because it states that there are sanitary protocols that must be followed to prevent food contamination. Besides, it is not only necessary to follow these protocols but also show evidence, be checked, or inspected by a professional to ensure that the procedures are being done and that they are being done correctly. By doing these two things, there is a minimum risk of food contamination.