Ace the Certified Dietary Manager (CDM) Exam 2026 – Fuel Your Future with Confidence!

The description that best defines fungi is that they are molds or yeast that can cause illness. Fungi are a diverse group of organisms that include molds and yeasts, which can be found in various environments, including food. Some forms of fungi can indeed lead to foodborne illnesses and other health issues, especially when they produce mycotoxins or when individuals have allergic reactions to them.

While fungi can also play a beneficial role in certain processes, such as fermentation (which may align with beneficial microorganisms in cooking), the key aspect of the question focuses on their potential to cause illness, making the selection appropriate. Other options do not accurately encapsulate the characteristics of fungi; for instance, harmful bacteria and processed food additives refer to different entities and do not speak directly to the nature and implications of fungi in food safety.