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.

Read the incomplete quatrain. the snowy hill calls to the sleeping child come play! it's time to run, and jump, and slide! my slope is steep, and every ride is wild! which line completes the quatrain's "abab" rhyme scheme? wake up! it's time to come enjoy the snow! wake up! i long for kids to come and play! awake, sweet child! embrace the winter thrills! awake, sweet child! it's time to come outside!

In washwoman who is the narrator telling the story

What is the independent cause in this sentence? "if the poem is about going mad when love is lost, what would happen if love didn't die? "