The cell theory was developed after matthius schleiden and theodor schwann concluded thatboth plants and animals were composed of cells. Other scientists including Rudolph Virchowlater made contributions that added to the cell theory. which of the following led to the earlydevelopment of the cell theory?|A. The finding that energy now occurs within cells.B. the proposal that traits were passed from cell to cell.C. the discovery that chemical composition is similar for all cells.D. the use of microscopes that allowed for the in depth examination of cells.