Answer:
correct answer is:
B) A species of animal dies off because of air and water pollution.
Step-by-step explanation:
If a species of animal were to die off, then it would result in the growth of another species ( the one that animal fed off ), which would then cause another species to die out, resulting in food shortages for other animals.
In short, the food chain would be affected.
Hope I was able to help :)