I do n't even ride my bicycle on Newsom Station any more because of the speeders . Sometimes , I do n't feel safe making a left hand turn into my neighborhood because of the cars racing down the hill . Yesterday , I left my neighborhood to walk to the Bellevue Announcements sign about a mile away to take the photo for the blog .

Options:
a). None of the above choices .
b). Passing cars .
c). Loose dogs .
d). Street trains .
Answer the following question: What causes the narrator much anxiety when out for a bike ride ?
b).