Question

the elements of style
by william strunk jr.
chapter 2: elementary rules of usage

1. in a series of three or more terms with a single conjunction, use a comma

after each term except the last.
thus write,
red, white, and blue
honest, energetic, but headstrong
he opened the letter, read it, and made a note of its contents.
this is also the usage of the government printing office and of the oxford
university press.

in the names of business firms the last comma is omitted, as
brown, shipley and company

1. enclose parenthetic expressions between commas.

the best way to see a country, unless you are pressed for time, is to travel
on foot.

this rule is difficult to apply; it is frequently hard to decide whether a single
word, such as however, or a brief phrase, is or is not parenthetic. if the
interruption to the flow of the sentence is but slight, the writer may safely omit
the commas. but whether the interruption be slight or considerable, he must
never omit one comma and leave the other. such punctuation as
according to the elements of style, which sentence is written in active voice?
a memorable
evening was had
by all who
attended the event.
the workers took
precautions while
digging along
power lines.
the acceptance
speech was given
by the award
winners.
the pennants were
won by the
championship
team.

Explanation:

To determine active voice, we check if the subject performs the action.

• "A memorable evening was had..." (passive: evening is acted upon).
• "The workers took precautions..." (active: workers (subject) perform took (action)).
• "The acceptance speech was given..." (passive: speech is acted upon).
• "The pennants were won..." (passive: pennants are acted upon).

So the sentence with active voice is "The workers took precautions while digging along power lines."

Answer:

B. The workers took precautions while digging along power lines.