Figurative Language: Personification in Poetry

Read the following excerpt from a poem:

"The wind whispered secrets through the trees,
Its voice a gentle caress, like silk on skin,
As shadows danced in the fading light,
And the world sighed, lost in twilight's embrace."

In this excerpt, the poet employs various figurative language techniques. Which of the following options best identifies the figurative language used when the wind is described as 'whispering secrets'?