Answer:
c. Multiple organisms may be affected by the loss of a plant species.
Step-by-step explanation:
We all know that all the animals on this earth depend upon plants for food either directly or indirectly because they can't synthesize their own food. Herbivores depend upon plants directly for their food whereas carnivores depend upon plants indirectly for their food. Carnivores hunt herbivores so if herbivores will exist then only carnivores will survive otherwise they will starve.
In this case, if herbivores particularly feed upon this plant species which is lost then the population of these herbivores will be reduced because there will be less food and the herbivores will compete each other for the food intraspecifically or interspecifically. As a result of which the carnivores feeding on such herbivores will also undergo same type of competitions and their population will get reduced too.
Apart from this certain type of plant plant interactions also exist in nature. If this plant species is lost then some other plant species may get benefited. When this particular plant species will get vanished then some other plant species will find ample space to grow and there will be less competition for food and water for them because of destruction of this plant species.
So, multiple organisms will get affected.