Read the excerpt from Between the Silver and the Ash. In wintertime you will not see

The object of your heart's desire.

The treasure that will set you free

You will not find in earth or fire.

But stand where rocks and pebbles sing

And seek the joyous sounds of spring.

Based on the poet’s word choices, what is the tone toward those who seek the treasure?

disinterested
mocking
encouraging
humorous