Which ecological relationship is best represented by this graph?
Mutualism
Commensalism
Parasitism
Predation

Commensalism is best represented by this graph.
It is the interaction and the result of it between two organisms. It can be either positive negative or neutral.
It can be either mutualism, commensalism, amensalism, predation, parasitism, mutualism, symbiosis, etc.
It is the type of interaction in which one species is unaffected while the other benefits from the relationship
Since the population size of A is unaffected while the population size of B is increased (benefitted), we can say that it is commensalism
To learn more about commensalism and interaction here,
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