Looks like one of the routes stops a mile and a half from home . That 's about 10 minutes by bike . The bus driver showed me how to use the bus carrier . Mileage : 10.6 miles total , time spent about ... 2 hours , though it was almost 4 hours from leaving to returning home .

Question: Why did the bus driver show me how to use the bus carrier ?
Answer: None of the above choices .Because it was almost 4 hours from leaving to returning home .Because the route is 10 minutes by bike .Because I did n't know how to use it .