Answer: Part A: Exponential Growth
Part B: Interphase
Explanation: Part A: This is showing exponential growth because its increasing the quantity over time.
Part B: A cell spends most of its time in interphase because the interphase is the phase in the cell cycle that consists of three sub-stages which are (G1), (S), and (G2). It makes the cell grows and makes a copy of itself.