what is defined as anything made up of atoms that has mass and takes up space?\nmolecules\nmixtures\nalloys\n…

Brief Explanations:

Matter is defined as anything made up of atoms that has mass and occupies space. Molecules are groups of atoms bonded together, mixtures are combinations of substances, and alloys are mixtures of metals. But the general term for what is described in the question is matter.

Answer:

D. matter