Final answer:
The answer to the question is A) Cytoplasm, Cytosol. The cytoplasm is a region containing cytosol and organelles between the cell membrane and nucleus. The cytosol is the aqueous part of the cytoplasm with enzymes and solutes needed for cellular processes.
Step-by-step explanation:
All living cells contain cytoplasm, along with substances dissolved in it. This is called the cytosol. The correct answer to the student's question is A) Cytoplasm, Cytosol. The cytoplasm is the cell's entire region between the plasma membrane and the nuclear envelope. It is composed of organelles suspended in the gel-like cytosol, the cytoskeleton, and various chemicals. The cytosol is the fluid part of the cytoplasm that contains an aqueous solution of electrolytes and enzymes, which catalyze many of the cell's chemical reactions. It consists of about 80 per cent water and includes dissolved salts, sugars, and amino acids needed for the cell's life processes. Enzymes in the cytosol are responsible for breaking down larger molecules, and waste products are also dissolved in it before being expelled from the cell or taken in by vacuoles.