Answer:
C. harmonious
Step-by-step explanation:
In the first and the beginning of the second stanza we see only the speech of the poetic subject regarding the creation of the lamb. It is from the third verse of the second stanza that we find the revelation of the poetic subject that shows the harmonious between the child and the lamb.
The Lamb represents childhood. It is an element of innocence not yet corrupted by society. These elements return to nature, accentuating the romantic character of the poet, marked by the return to the pagan world.