Biology

All living organisms, from bacteria to plants and animals, are made up of cells. Cells are the basic structural and functional units of life, and they are common to all living organisms.

For A: This is incorrect. Not all living organisms have a central nervous system. For example, plants, fungi, and many simple organisms (like bacteria) do not have a nervous system, let alone a central nervous system.
For B: This is incorrect. While many organisms can reproduce sexually, not all do. ...