SAT Question c966ad55: Text Structure And Purpose answer and explanation

English - Text Structure And Purpose - Function Of Underlined Portion
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The following text is from Srimati Svarna Kumari Devi’s 1894 novel The Fatal Garland (translated by A. Christina Albers in 1910). Shakti is walking near a riverbank that she visited frequently during her childhood. She crossed the woods she knew so well. The trees seemed to extend their branches like welcoming arms. They greeted her as an old friend. Soon she reached the river-side.
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Difficulty:Easy
Which choice best describes the function of the underlined portion in the text as a whole?