on his voyage on the HNS Beagle, Darwin saw fossils of giant sloths whose bones resembled bones of living sloths, but were much large in size. Drawin hypothesize that the fossil sloths were related to sloths alive today. This hipótesis was based on

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.

ever get the answers? im stuck on this as well