Questão do Enem 2020

A Minor Bird

I have wished a bird would fly away,
And not sing by my house all day;

Have clapped my hands at him from the door
When it seemed as if I could bear no more.
The fault must partly have been in me.
The bird was not to blame for his key.

And of course there must be something wrong
In wanting to silence any song.

FROST. R. West .running Brook Now Yolk Horny Hod and Company, 1928

No poema de Robert Frost, as palavras "fault" e "blame" revelam por parte do eu lírico uma