Use the paragraph from "Dusk" to answer the question.

With that reflection Gortsby rose to go; as he did so an exclamation of concern escaped him. Lying on the ground by the side of the bench was a small oval packet, wrapped and sealed with the solicitude of a chemist's counter. It could be nothing else but a cake of soap, and it had evidently fallen out of the youth's overcoat pocket when he flung himself down on the seat. In another moment Gortsby was scudding along the dusk-shrouded path in anxious for a youthful figure in a light overcoat. He had nearly given in a light overcoat. He had nearly given up the search when he caught sight of the object of his pursuit standing irresolutely on the border of the carriage drive, evidently on the border of the carriage drive, evidently uncertain whether to strike across the park or make for the bustling pavements of Knightsbridge. He turned round sharply with an air of defensive hostility when he found Gortsby Hailing him.

What is the purpose of the description of the "dusk-shrouded path"?

It shows that most of the people in the park are feeling anxious
It signals that a new day is taking place in the timeline of the story
it indicates in which time of year the story takes place
it suggests that it is difficult for Gortsby to see who is in the park