7. this question is based on the following poem.
some say life's a monopoly game,
spread like a picnic to kill the grass,
assuring no winners save some ants,
until amid the fading rants,
none there are to punch one's pass
into the halls of fame.
the metaphor for life in this poem is
a. a picnic.
b. halls of fame.
c. some ants.
d. a monopoly game.

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.