Answer:
I love science here's a explanation of all of your choices
Step-by-step explanation:
An organelle (think of it as a cell's internal organ) is a membrane bound structure found within a cell. Just like cells have membranes to hold everything in, these mini-organs are also bound in a double layer of phospholipids to insulate their little compartments within the larger cells.
A Therefore, cells not only make up living things; they are living things. Cells are found in all plants, animals, and bacteria. Many of the basic structures found inside all types of cells, as well as the way those structures work, fundamentally are very similar, so the cell is said to be the fundamental unit of life.
B The key principle is that the smallest unit of life is the cell. ... But anything that makes up a cell necessarily has to not be alive. So all of the organelles in a cell like the nucleus, mitochondria, and endoplasmic reticulum are all non-living
C A non-living thing is not organized into cell(s); a living thing is. Although both non-living and living things are essentially made up of molecules of elements and compounds, a living thing would be made up of biomolecules organized into structures of a cell.
D All living things are made of cells; the cell itself is the smallest fundamental unit of structure and function in living organisms. (This requirement is why viruses are not considered living: they are not made of cells. ... Cells are classified as prokaryotic or eukaryotic.