Amensalism can be represented as :

The correct answer is Species A (−) ; Species B (0).

Understanding Amensalism:
Amensalism is a type of ecological interaction between two different species where one species is harmed, inhibited, or destroyed, while the other species remains unaffected (neither benefited nor harmed).
In ecological notation, we represent these effects using symbols:
- A minus sign (−) denotes that a species is harmed or negatively affected.
- A plus sign (+) denotes that a species benefits from the interaction.
- A zero (0) denotes that the species is unaffected (neutral interaction).

Let us analyze the interaction between two species, Species A and Species B:
- One species (for example, Species A) is negatively affected, which is represented by (−).
- The other species (Species B) is unaffected, which is represented by (0).

Therefore, the symbolic representation of amensalism is Species A (−) ; Species B (0) (or vice versa).