The descriptions of morphological traits are often _____ which are due to _____
(a) ambiguous, multiple genetic factors
(b) lucid, more than one genetic factors
(c) clear, multiple genetic factors
(d) ambiguous, one or two genetic factors
I have been asked this question by my school teacher while I was bunking the class.
Enquiry is from Phylogenetics Basics in portion Molecular Phylogenetics of Bioinformatics