Which sentence uses the passive voice for the main verb? if we use our cell phones during class, the teacher confiscates them. when they can, students slide down the banister in the science wing. when we can pick our reading, mythology is most often chosen in my class. if they choose to participate, students perform their poems at the poetry slam.

Passive voice is the voice used to show an interest in the object or person who experienced the action rather upon the action performer. In passive voice, a subject is an important thing.

Therefore, the sentence which uses the passive voice for the main verb is,

when we can pick our reading, mythology is most often chosen in my class.

Wherein the object becomes the subject and the main verb "chosen" becomes passive.

for this case, we must find the number of deaths per day of the year 2015, in automobile accidents, knowing that 32,400 people died.

knowing that the year 2015 had 365 days we have the following division:

where "x" represents the number of deaths per day.

rounding off we have:

approximately, 89 people per day died in 2015

answer:

89 people per day