<span>The S in SQ4R stands for 'survey', which involves skimming and previewing a book</span>
Gaius Julius Caesar<span>One of the key factors was the First Triumvirate. The First Triumvirate was a political alliance between three powerful men in the Roman Republic: Gaius Julius Caesar,Marcus Licinius Crassus, and Gnaeus Pompey. It was formed in 60 BCE, and lasted until 53 BCE.</span>
The purpose of the use of elongated hyphens in this excerpt is C. To interrupt the pattern of speaking in the normal flow of ideas.
Elongated hyphens are used to emphasize something, add extra information and even as a substitute for commas in some cases.
The other options are not correct because they don't cover the main function of the elongated hyphens which is to disrupt a sentence with extra information added to it.