This is a short GMAT verbal question that consists of a single sentence with two commas. These two commas effectively split the sentence into 3 parts. And thus, we look at this sentence through Core Frameowrk #4: Split Sentences.
Split sentences can be arranged in a few different ways. In this case, we have the descriptive phrase in the middle with the main part of the sentence on the left and right side of that phrase.
The descriptive phrase here: laden with packages.
From a structural perspective, this phrase describes the word/phrase closest to the comma before the descriptive phrase. In this case, the phrase is describing the ramp. But besides applying a structural perspective to the sentence analysis, you also need to consider the meaning.
Some of you may have heard of the general trend in GMAT sentence correction questions towards questions that are focused less on idioms and more on meaning. The purpose of this is to help ensure that non-native English speakers are not at a significant disadvantage in terms fo taking the GMAT test. These non-native English speakers may not be aware of subtle idiomatic expressions in the English language. So as a result, the GMAC folks have been shifting questions towards more fo a meaning-focused approach.
So the GMAT question above sort of represents this shift. Sructurally, you know the sentence describes one thing, but you also need to make sure it makes sense from a meaning perspective.
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