How is a story's tone often expressed? A) through its protagonist's attitude toward the theme
B) through its characters' physical descriptions
C) through its characters' dialogue
D) through its antagonist's attitude toward the theme

The sentence needs a descriptor of exactly "what" will happen at gurley and marina. in this case, it is the light at the intersection turning green. in this case, the sentence could be rewritten as "the light at the intersection of gurley and montezuma will turn green exactly three seconds after the light at the intersection of gurley and marina."

She is smart because she left a trail