Answer:
Cell theory states that:
1. All living organisms are made up of one or more type of cells.
2. Cells are the basic structural and organizational unit of all organisms.
3. All cells come or arise from the pre-existing cells.
Hence, the correct answer is Living organisms are not created spontaneously i.e. they arise from pre-existing cells.
Other options can be excluded as: organisms can be unicellular also, cells have different structure and function (such as muscle cell, nerve cell etc). Lastly, cells are found in living organisms only.
