Where do bacteria commonly originate from?

Bacteria are commonly found in various environments, with humans and raw food being significant sources. Humans can carry bacteria on their skin and in their digestive tract, making them potential carriers of pathogens. Furthermore, raw food such as meat, poultry, fish, eggs, and unwashed fruits and vegetables can harbor harmful bacteria if not handled or cooked properly. This makes the combination of humans and raw food a critical area of concern in food safety practices, as proper hygiene and cooking techniques are essential to prevent foodborne illnesses.

Water sources can also contain bacteria, but they are not as direct a source in the context of food handling as humans and raw food are. Plants, while they can sometimes host bacteria, do not generally serve as the primary source of pathogens when considering direct consumption of food items. Canned foods, when processed properly, are typically safe from bacterial contamination, so they are less of a concern compared to raw ingredients. The correct answer effectively highlights the two primary sources of bacteria that food handlers need to be aware of in ensuring food safety.