The reason that the process called is so exact is to ensure that each daughter cell has an exact copy of the parental dna. this process occurs in eukaryotes to repair tissues and produce new cells.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.