Concept:Non-renewable resources are those that cannot be replaced easily once they are used up.Explanation:Petroleum is formed from the remains of ancient organisms over millions of years. It cannot be renewed within a human lifespan.Air is continuously recycled through natural processes.Food crops can be replanted and grown again in a short time.Soil is renewed by natural processes like weathering and decomposition of organic matter.Therefore, petroleum is the resource that cannot be renewed.Answer:B. Petroleum