Aphylogenetic tree (select one):

a. shows the similarities between different taxa.
b. is a hypothesis about evolutionary relationships.
c. can illustrate selection pressures that have acted on taxa.
d. shows the number of character changes that have occurred between taxa.
e. must be rooted to properly convey evolutionary relationships.

Option B, is a hypothesis about evolutionary relationships

Explanation:

Phylogenetic trees show the evolutionary relationship between different organism and species. The relationship between species is based upon their physical, biochemical, behavioral and biological traits such as body structure, organ and shape, pattern of feeding, reproduction etc. The tree consists of nest or branches where branching represents deviation of a group of organism from the parent characteristic or trait. Now days, sequences of genes are also used to build phylogenetic trees

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;