In which sentence is the underlined word an indefinite article?

a.

our dog ate the bone quickly.

b.

one bird flew over us.

c.

i need a pair of socks.

Hey can you guys g on my account and keep

Isaw him _ .(a)danced (b)dance (c)dancing

At four hundred miles they stopped to eat, at a thousand miles they pitched their camp. they had traveled for just three days and nights, a six weeks' journey for ordinary men. this excerpt is repeated several times. how does this repetition affect the epic?