In "auspex," the phrase “dead leaves and snow” at the end of the first stanza implies that the speaker is experiencing

The choices can be found elsewhere and as follows:

feelings of indifference and numbness.
an absence of love or passion.
physical weakness as aging occurs.
emotional maturity that comes with aging.

I think the correct answer is the second option. It implies that the speaker is experiencing an absence of love or passion. The stanza it self emphasize the fact that his love has left. Hope this answers the question.

Iwould have to say a

What do you mean determine? answer in comment section.