Answer:
the stars winked at me
Stars are thing that is being personified because they aren't human, they can't wink.
the book read itself to me
Books can't read or talk, so that's what's being personified in that line.
the tree whispered in the wind
Come on! Trees can't talk! The trees are what's being personified in this line.
Step-by-step explanation:
Personification is describing an object that is not human by giving it human qualities.
Comparing is describing two object by using the words "like" or "as".
None of these lines consist of the words "like" or "as", so there is nothing being compared in this poem.
I really hope this helps you out!