Final answer:
The fundamental properties of life are exhibited in organelles, which are specialized structures within cells performing essential functions.
Step-by-step explanation:
The cellular organization where fundamental properties of life are exhibited is in structures called organelles. Organelles are specialized structures within a cell that carry out specific functions essential to life. Among the various options, organelles (a) is the correct choice. Levels of biological organization follow a hierarchy that includes atoms, molecules, organelles, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystems, and the biosphere. The smallest unit of structure and function in living organisms is the cell.