Which of the following contains an error in verb voice?

had i known you would be upset, i would have postponed the trip.

if she was a more active person, she would feel better.

i had hoped we would be further along than this by now.

a prompt—executive bird is the jay

by emily dickinson

a prompt—executive bird is the jay—
bold as a bailiff's1 hymn—
brittle and brief in quality—
warrant2 in every line—

sitting a bough3 like a brigadier4
confident and straight—
much is the mien5 of him in march
as a magistrate6—

legal officer
legal action
branch of a tree
army officer (british)
appearance
judge

i heard a bird sing

by oliver herford

i heard a bird sing
in the dark of december.
a magical thing
and sweet to remember.

"we are nearer to spring
than we were in september,"
i heard a bird sing
in the dark of december.

review the two poems. what literary device is used to describe the bird in "a prompt-executive bird is the jay" that is not used in "i heard a bird sing"?

allusion

metaphor

simile

hyperbole

if i were better in math, i would have done better in chemistry class.