What is one purpose of symbolism used in this passage

Answer: C. To portray an urban setting as a place of loneliness and isolation.
Explanation:
Symbolism refers to the use of symbols to represent ideas and characteristics, with symbolic meanings that differ from their literal sense, and provide a deeper significance.
Prufrock uses symbolism when he describes a cold and lonely urban environment by using the idea of "half-deserted streets" and "sawdust restaurants"