Concept:An abiotic factor is a non-living physical or chemical component of the environment that affects living organisms.
Explanation:Abiotic factors include rainfall, temperature, sunlight, water, and soil.
These factors do not come from living organisms.
Predator, food shortage, and disease are all biotic factors because they involve living things.
Rainfall is a non-living environmental condition that can affect population growth.
Therefore, the correct option is the one that lists a non-living factor.
Answer:B. rainfall