Answer: The correct answer is -
B. A shared resource.
In environmental science, a resource can be described as substance/ material (such as food, water, light, nutrients) that are essential for the survival, growth, and reprodution of living organisms.
For instance, all plants share same resources that are light, nutrients (like nitrogen, phosphorous, sulfur, potassium, oxygen), and water for their proper growth and reproduction.
In other words, certain resources are being shared by many organisms.
Thus, option B) is the right answer.
