Explanation
The correct answer is A: Purkinje.
The term "protoplasm" was coined by the Czech anatomist Jan Evangelista Purkinje in 1839. Purkinje used the term to describe the jelly-like substance that makes up the living matter of cells, including the cytoplasm and the nucleus. The concept of protoplasm helped to revolutionize the study of biology and advance the understanding of cellular structure and function.
Leeuwenhoek (B) was a Dutch microscopist who is credited with the discovery of microorganisms, but he did not coin the term protoplasm.
Schleiden and Schwann (C) were German botanists who formulated the cell theory, which states that all living things are composed of cells. While they did not coin the term protoplasm, their work laid the foundation for the study of cellular biology.
Dujardin (D) was a French biologist who discovered protoplasmic streaming, the movement of cytoplasm within cells, but he did not coin the term protoplasm.
