The correct answer is: D) It seemed as if she was alone on the streets.
The narrator describes the emptiness of the streets while she is going to the carnival. By using the word "deserted" she states that there is no one there. We can see she is surprised because she compares this empty streets with the same streets in a normal day, which are described as "hectic" meaning that they are usually filled with activity and movement. Normally all the businesses are open and busy with people buying and selling, this day they are closed. As nobody is there, the normal sounds of a living city are not there either, this makes it possible for the author to hear things in the distance. All these descriptions give us the sensation of loneliness, the same sensation the author feels.