The natural tendency of organisms as they evolve is to

Organisms are constantly evolving, and this process is characterized by changes that occur over time. The natural tendency of organisms as they evolve is not to decrease in size (Option A), but rather to either increase in number (Option B), develop specialized structures (Option C, which is the correct answer) or to feed selectively (Option D).

When organisms evolve, they adapt to their environment in order to survive and reproduce successfully. This adaptation can take many forms, but one common feature is the development of specialized structures that allow them to perform specific functions more efficiently. These structures may include physical features like wings or fins, or internal structures like enzymes that aid in digestion.

While some organisms may increase in number as a result of evolution, this is not necessarily true for all species. For example, some species may have a low reproductive rate but still be successful if they have evolved efficient means of survival.

Similarly, the idea that organisms feed indiscriminately is not accurate. Most organisms have evolved specific feeding strategies that allow them to obtain the nutrients they need to survive. For example, herbivores have specific structures and digestive systems that allow them to efficiently break down plant material, while carnivores have sharp teeth and strong jaws that allow them to catch and consume other animals.

In conclusion, the natural tendency of organisms as they evolve is not to decrease in size or feed indiscriminately, but rather to develop specialized structures that allow them to survive and reproduce successfully in their environment.