Answer :
I believe the correct answer is D) they are in the same family.
A) is certainly not correct, because they can look different, although they don't have to.
B) species is a lower taxonomic rank than genus
C) they don't have to live in the same kind of environment
A) is certainly not correct, because they can look different, although they don't have to.
B) species is a lower taxonomic rank than genus
C) they don't have to live in the same kind of environment