Which is not true about the alternation of generations?
a. a sporophyte releases haploid spores.
b. gametophytes produce diploid gametes.
c. a haploid spore grows into a gametophyte.
d. the life cycle of a plant alternates between diploid and haploid phases.

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.