Analyze the structural and semantic organization of the complex nominal group: "The recently updated safety protocol guidelines."

I. The head of the phrase is "guidelines", which receives multiple levels of pre-modification, creating a high information density typical of Technical English (ESP).

II. The word "safety" functions as a noun adjunct, but it specifically modifies the compound unit "protocol guidelines", rather than just the word "protocol".

III. The adverbial-adjectival block "recently updated" establishes a temporal boundary that restricts the entire subsequent nominal chain.

Based on the principles of Nominal Groups, choose the correct option: