Which of the following describes the most common characteristic of an omnivore?

The most defining characteristic of an omnivore is their dietary flexibility, meaning they consume both plant matter and animal products. This versatility allows omnivores to adapt to a wide range of environments and food availability.

Omnivores have the ability to benefit from various nutritional sources, including proteins, fats, carbohydrates, vitamins, and minerals found in both plant and animal foods. This adaptability can provide an evolutionary advantage, as omnivores can thrive in diverse habitats and can adjust their diet based on seasonal changes or food scarcity.

In contrast, the other options describe organisms with more restrictive diets. Those that only eat fruits, meats, or plants demonstrate a specialized eating pattern, which contrasts with the broader dietary habits of omnivores. By consuming both plants and animals, omnivores fulfill their nutritional needs efficiently, which is why this answer accurately captures the essence of what defines an omnivore.