The following sentences appear in the same paragraph in "Araby." Which sentence could best be characterized as a loose sentence?

a.

At nine o'clock I heard my uncle's latchkey in the hall door.

b.

I heard him talking to himself and heard the hallstand rocking when it had received the weight of his overcoat.

c.

I could interpret these signs.

d.

When he was midway through his dinner I asked him to give me the money to go to the bazaar.