The microphone, /which he chose to use/ ,did not work well.
identify the term that best describes the italicized words
adjectival clause
noun clause
independent clause
adverbial clause

The microphone, /which he chose to use/, did not work well.

Identify the term that best describes the italicized words.

adjectival clause

An adjectival clause is a dependent clause that, like an adjective, modifies a noun or pronoun. In this case, the adjectival clause  which he chose to use modifies the noun microphone.

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

the flighty purpose never is o'ertook / unless the deed go with it"