If someone could help me, I would really appreciate it! ~DO NOT ANSWER JUST FOR THE POINTS~
Part B: Observing Rhizobium with a Microscope

Sketch the bean nodule, labeling cells with and without Rhizobium, showing what you observed in the micrographs.

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; projective;