What is the effect of the underlined section in developing the tone of this excerpt from "in a queen's domain" by sarah morgan bryan piatt?

my subjects, the lamb and the fawn,
they hide their heads in my breast;
and my subject, the dove, coos on,
though my hand creep close to her nest.

but my subject, the bee, will sting;
and my subject, the thorn, will tear;
and my subject, the tiger, will spring
at me, with a cry and a glare.

a. it adds to the soft tone of the poem to describe the gentleness of nature.
b. it adds to the arrogant tone of the poem to describe the power of nature.
c. it adds to the angry tone of the poem to describe the inequality and unpredictability of nature.
d. it to change the tone of the poem from calm and carefree to sinister and menacing.
e. it to expose the true nature of humans, who can be cruel under an angelic demeanor.