Answer:
Gap 2 (G2): During the gap between DNA synthesis and mitosis, the cell will continue to grow and produce new proteins. At the end of this gap is another control checkpoint (G2 Checkpoint) to determine if the cell can now proceed to enter M (mitosis) and divide.
Explanation:
Zebra,Blackbear,butterfly,pandabear
I honestly think it is D. Impulses.
The answer is the plant growth, because the dependent variable is what responds to the independent variable.