Answer:
CHK2, p53, p21, cell cycle progression.
Explanation:
In a normal cell with no LFS mutation, during the G1 stage of cell cycle progression, the CHK2 activates if there is damage in the DNA. CHK2 activates p53, which is a tumor suppressor protein that will hold the cell cycle in G1/S until the DNA is repaired. The p53 protein activates p21, a protein that binds to CDK2 and stops the cell cycle. The cell cycle will continue once the damage is repaired.
Step 1. Simplify brackets

Step 2. Simplify
13
Done! :)
Your answer is A. 13 Hope this helps!
A hematoma in the flank locale. A hematoma is a confined accumulation of blood outside the veins, due to either malady or injury including damage or surgery and may include blood proceeding to leak from broken vessels. A hematoma is at first in fluid shape spread among the tissues incorporating into sacs between tissues where it might coagulate and harden before blood is reabsorbed into veins. An ecchymosis is a hematoma of the skin bigger than 10mm.
The answer is D, all of the above.