Option (B) is correct because biosphere include all living and non living organisms. Biosphere is a global ecosystem composed of living organism and non living organism from which they derive energy and nutrients.
Option (A) is not correct because biosphere means a global ecosystem and only plants cannot make a global ecosystem.
Option (C) is not correct because only animal cannot form an ecosystem and on earth only animals are not present.
Option (D) is not correct because living organisms depends on non living organisms for energy and nutrient.
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