Which of the following exemplifies a transformation process?

The transformation process refers to the conversion of one substance into another, typically involving a change in form or composition. The correct answer illustrates this concept effectively through the example of soluble glucose being converted into insoluble starch in plants. In this process, plants undergo photosynthesis and subsequently engage in biochemical reactions where glucose, a simple sugar, is transformed into starch, which is a complex carbohydrate. This transformation is crucial for energy storage within plants; starch serves as a reserve that plants can utilize when needed.

The other options do not exemplify transformation processes. For instance, water flowing in a stream does not change its chemical composition and is more of a movement process. Carnivores eating prey relates to energy transfer within an ecosystem but does not involve the transformation of one substance into another. Similarly, predators hunting for food is an action that illustrates behavior within ecosystems rather than a transformation of materials. Thus, the conversion of glucose to starch is the clearest example of a transformation process in this context.