'Finally' is the answer the others don't make sense if you try to read them with the rest of the sentence.
Squirrel in a tree
Quirky as can be
Unaware of me
It sits where I can see
Resting, watch it stir
Rustling, fuzzy fur
Energetic whir
Leaves in a blur.
Uhhhhh what the heck does the first part mean.
Well to do the unexpected that always grabs peoples' attention trust me