Correct option is B
The term 'Ecology' was first introduced by the German biologist Ernst Haeckel in 1866. He coined the term "Ökologie" in his work to describe the study of organisms and their relationship with their environment.
Information Booster :
Ernst Haeckel also introduced many concepts related to biology and the theory of evolution. He was a prominent supporter of Charles Darwin's theories, and his works contributed significantly to the development of biology.
Dipankar Sengupta, Karl Marx, and Adam Smith are influential figures in their respective fields (sociology, political theory, and economics), but their work did not directly relate to the field of ecology.
Ecology has since developed into a broad and vital scientific discipline that explores the interactions of organisms with each other and with their environment.