It would be D.
Extensive Properties are things like Volume, mass, weight, and length
Intensive properties are things like boiling point, odor, hardness, melting point, temperature, etc.
Bacteria are decomposers when they are turning the dead material in decaying organisms into nutrients. They become producers when they provide those nutrients for plants.
The phase of mitosis that is characterized by the arrangement of all chromosomes along the equator of the cell is called b. metaphase.