Hello Everyone!
This is a great example of a GMAT question that deals with modifiers! Let's start by taking a quick look at each option, and highlight the major differences between them in orange:
Using study groups managed by the principal popular organizations and political parties, the Swedish public was informed by the government about energy and nuclear power.
(A) the Swedish public was informed by the government about energy and nuclear power
(B) the government informed the Swedish public about energy and nuclear power
(C) energy and nuclear power information was given to the Swedish public by the government
(D) information about energy and nuclear power was given to the Swedish public by the government
(E) the public of Sweden was given energy and nuclear power information by the government
Whenever we see options that are all drastically different from one another, we have to ask: what's the bigger picture? For this question, it's clear that we're dealing with modifiers because the modifier isn't underlined, but the rest of the sentence is.
The most common mistake that writers make concerning modifiers is placement. Modifiers should immediately precede or follow what they're modifying. So, let's take a closer look at each option, and ask ourselves:
WHO/WHAT used study groups managed by the principal popular organizations and political parties?
It makes the most sense to say the government used study groups, and then told the public about their findings! Let's see which options place the government directly next to the modifier:
(A) the Swedish public was informed by the government about energy and nuclear power
(B) the government informed the Swedish public about energy and nuclear power
(C) energy and nuclear power information was given to the Swedish public by the government
(D) information about energy and nuclear power was given to the Swedish public by the government
(E) the public of Sweden was given energy and nuclear power information by the government
It's clear that the only option that places the modifier and antecedent next to each other is option B, which is the correct choice! If you can identify the grammar concept you need to focus on, sometimes you can find the correct option rather quickly!
Don't study for the GMAT. Train for it.