Answer
the most appropriate option is (d); all these are correct.
Work Step by Step
Cell is basic structural and functional unit of life. Cell theory postulated by three workers collectively, describes properties of cell. Cell is living and capable of reproduction to produce young ones/ new cell of its kind.
Three German scientist;Matthias Schleiden, Theodor Schwann and Rodolph Virchow developed cell theory:
Thet stated cell is the basic unit of life.
Every organism on this earth is made up of cells.
Cell reproduce so all cells originate from pre-existing cells.
Thus, most appropriate option is (d); all these are correct.
