Which of the following are examples of mesophilic microorganisms?

The selection of Lactobacilli and staphylococci as examples of mesophilic microorganisms is accurate because these organisms thrive in moderate temperature conditions, typically between 20°C to 45°C (68°F to 113°F). Mesophilic bacteria are commonly involved in various fermentation processes and are significant in food production and safety, particularly in dairy and meat products.

Lactobacilli are particularly important in the production of yogurt and other fermented foods, while staphylococci, such as Staphylococcus aureus, can also play a role in food spoilage and foodborne illness. Their growth in moderate temperature ranges makes them distinct from psychrophilic, which prefer colder environments, and thermophilic microorganisms that thrive at higher temperatures.

The other choices either include organisms that do not fall into the mesophilic category or are too broad. For example, Bacillus stearothermophilus is a species known for its thermophilic capabilities, and the general reference to bacteria and fungi does not specify temperature preferences, making them an unsuitable choice for this question. Escherichia coli and Salmonella, while commonly associated with food safety, exhibit mesophilic characteristics but the more comprehensive grouping of Lactobacilli and st