Choose the letter of the implied main idea of the pamage below, Justin raced along the city sidewalks, the straps of his book-bag streaming out behind him. He dodged

pedestrians, signs and light poles, stopping only briefly at a red light to check his watch. Looking panicked, he

sprinted the last few yards to the enormous bronze doors of the train station, entered, and began searching his

pockets for his ticket. Down the steps to Track 5 he raced, causing station officials to look at him curiously,

When he reached the platform, however, his shoulders slumped in defeat. Just disappearing around the bend

of the track were the red taillights of a train,

The train had already left,

Despite rushing, Justin had missed his train,

Justin was late because he was kept at school,

A boy named Justin was hurrying through the city,