The correct option is D All of the above
The cytosol is the portion of the cytoplasm and made up of cytoskeleton filaments, some dissolved molecules and water. The cytosol's filament is the protein filaments such as actin filaments and microtubules that make up the cytoskeleton, as well as soluble proteins and small structures such as ribosomes, proteasomes. Thus, the correct answer is option D.