Correct option is C
The correct answer is (c) 1665
Robert Hooke introduced the term 'cell' in the year 1665.
He used this term to describe the microscopic structures he observed in cork under a microscope.
Hooke's discovery and naming of cells laid the foundation for the development of cell theory, which states that all living organisms are composed of cells, and cells are the basic unit of structure and function in living organisms.
Hooke's work on cells was published in his book "Micrographia."