The answer is B. Commensalism.
<span>Commensalism is a relationship between two organisms in which only one of them has benefit, and the other one is not affected. In this example, the Great Burdock's plants spread their seeds using animals, so they benefit from this relationship. On the other hand, animals neither have benefits not are harmed from the relationship.</span>
I dont know what subject is this
Late answer:
Chromosphere.
D snails, guppies and plants. The community should be diverse and have lots of biodiversity.
