Which of the following would be useful in creating a phylogenetic tree of a vertebrate taxon?

Below are useful in creating a phylogenetic tree of a vertebrate taxon:

1.      DNA sequence from living organism or also known as genetic sequence, it is used to determine strand of DNA

2.      Behavioral data from living species, a method to identify the origin of individual in behavioral aspect

3.      Morphological data from fossils, study the arrangement and physical aspect of organism 

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .