The correct answer is (c) both living organisms and non-living objects. An ecosystem is defined as a community of living organisms (biotic factors) and their non-living environment (abiotic factors) interacting together.
Explanation:
Biotic factors: include all living organisms like plants, animals, fungi, and bacteria.
Abiotic factors: include non-living components like air, water, soil, temperature, and sunlight.
Ecosystems are dynamic systems where living and non-living components interact and influence each other.