Idea of branching descent depends upon:
A)analogy. B)homology C)patentological evidences

Dear student,
Answer is option B.
Branching descent refers to origin of two or more new species from a common ancestral species. Homology means the evolution of the same body part of a common ancestor into different kinds in the descendants to fulfil different functions. Since homology is result of divergent evolution, the idea of branching descent depends upon homology.
Regards.