I think your answer should be B. an organism. Hope this helps. =^-^=
Phototropism, Gravitropism, Thigmotropism, <span>Hydrotropism and Heliotropism</span>
<span>EUBACTERIA...............................................
</span>
<span>bacteria - living
virus</span> - non living<span>
moss</span> - living<span>
you</span> - living <span>
a lemon seed</span> - living<span>
The air</span> - non living<span>
bread</span> - non living<span>
lettuce</span> - living<span>
rocks</span> - non living
