How in the world can all the piece's of sand be enough to go across our universe or however that was worded that blow's my mind and feel isn't right no way?

the answer is d. none of the above

the cell is the smallest structural and functional unit of living organisms, which can exist on its own. therefore, it is sometimes called the building block of life. some organisms, such as bacteria or yeast, are unicellular—consisting only of a single cell—while others, for instance, mammalians, are multicellular.