You have generated mutations in the DNA sequence of a eukaryotic promoter at its TATA box, resulting in severely reduced transcription of the downstream gene. You have identified a suppressor mutation at an independent gene locus that restores transcription of this gene. This suppressor mutation is most likely a DNA sequence that encodes:

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.

answer: 45

explanationyou have to add as well to be it could be

b is the correct answer