Rearrange the following sentences to form a coherent paragraph:
1. The primary purpose of this process is to ensure that the food we eat is safe and does not contain harmful bacteria or other contaminants.
2. Food processing is a series of methods used to transform raw ingredients into consumable products.
3. These methods can range from simple actions like cutting and grinding to more complex procedures such as pasteurization and fermentation.
4. Furthermore, it also helps to preserve food, extend its shelf life, and enhance its nutritional value.
A2, 3, 1, 4
B1, 2, 3, 4
C3, 1, 4, 2
D4, 2, 1, 3
