<span>Option C is a true statement that compares the two gasses in a simple factual way. Both are compound gasses formed of Carbon (C)and Hydrogen(H).
Butane has a formula of C4H10
whilst Methane has a formula of CH4</span>
"Humans do not have gills as fish do, but human embryos have gill slits, suggesting humans and fish share a common evolutionary ancestor" is the one among the following that <span>provides the best example of how comparative embryology supports the theory of evolution. The correct option among all the options that are given in the question is option "C". </span>