Final answer:
The bacteria most likely to be found in Cindy's soft cheese is Listeria monocytogenes, which can multiply in refrigerated conditions and is often associated with dairy products.
Step-by-step explanation:
The bacteria most likely to be found in Cindy's soft cheese, especially after being stored for several months in reduced oxygen and increased carbon dioxide conditions at refrigerator temperatures, is Listeria monocytogenes.
Listeria monocytogenes is a psychrophilic gram-positive bacterium known to multiply at refrigeration temperatures between 4-10°C and is halotolerant, tolerating high concentrations of salt. This makes it a common source of foodborne illness, particularly in refrigerated foods like meat, fish, and dairy products, including soft cheeses.