Final answer:
The leaves on a plant moved by the wind (option c) is NOT an example of plants demonstrating the characteristics of life because it's a passive movement, not an active response.
Step-by-step explanation:
The option that is NOT an example of plants demonstrating the characteristics of life is (c) The leaves on a plant are moved by the wind. This choice reflects a passive movement caused by an external force rather than an active response by the plant. In comparison, options (a), (b), and (d) all describe active responses and adaptations of plants which are characteristic of a living organism. Plants demonstrate characteristics of life by responding to stimuli, such as light through phototropism, making adaptations to their environment, and going through different stages of growth based on conditions.