The correct options are
A Forelimbs of frog and bird
B Arms of rabbit and human
C Forelimbs of lizard and bat
∙ Homologous organs are those organs which have similar structure and have evolved from a common ancestor, but differ in their function.
∙ All the limb structures of vertebrates like frog, bird, bat, rabbit, human have common structure and origin but serve different funtions. Hence, they are homologous to each other.
∙ Wings of a butterfly and wings of a bat, although serve the same function, have no common stucture or origin and hence are called analogous organs.