Hi mehulsayani,
Thank you for your question.
For this sentence, the most noticeable difference in each answer is the placement of the adverb "adequately." In this case, it should be modifying the verb "give," which means "adequately" needs to be placed directly before or after "give." So let's see if we can narrow down answers that put the adverb "adequately" with the wrong thing:
A: models who do not smile adequately in magazine advertisements give an impression
"Adequately" is modifying "smile," so this is
WRONG.
B: models in magazine advertisements who do not smile give an impression adequately
"Adequately" is modifying the right thing, but it's not directly next to the word "give," so let's rule this out as
WRONG too.
C: models who do not smile in magazine advertisements adequately give an impression
"Adequately" is next the the verb "give," which is
OK, so let's keep this one for later.
D: it is the models, in magazine advertisements, who do not smile and adequately give an impression
"Adequately" is right next to the verb "give," which is
OK, so let's keep this one too.
E: in magazine advertisements, the models who do not smile adequately give an impression
"Adequately" is placed directly between "smile" and "give," which makes it unclear which verb it's supposed to be tied to. Placing an adverb between two verbs is
WRONG because it's unclear.
So, based on this first problem, we can rule out answers A, B, & E. Now that we're left with only two answers - C & D - let's break down which one is the better answer. What I like to do here is read through each option plugged into the original sentence:
C: According to a recent study linking high social standing to a habitually stern facial expression,
models who do not smile in magazine advertisements adequately give an impression of status and exclusivity, even if they are not wealthy or influential themselves.
This is the
CORRECT answer because it places the adverb "adequately" in the right place, and it is clear that it's discussing only a portion of all magazine models (just the ones who don't smile), not all of them.
D: According to a recent study linking high social standing to a habitually stern facial expression,
it is the models, in magazine advertisements, who do not smile and adequately give an impression of status and exclusivity, even if they are not wealthy or influential themselves.
This is
INCORRECT because by moving the phrase "in magazine advertisements" to between commas, it now changes the meaning. This sentence is saying that ALL models don't smile and give an impression of status and exclusivity - the fact that they're in magazine advertisements isn't important because it's between commas. We know that not ALL models do this, so it's not a true statement.
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