To solve this problem, we need to identify which animals have additional chambers in their digestive tract, such as the crop and gizzard.$\newline$Let's analyze each option:$\newline \bullet$Option 1: Corvus, Columba, Chameleon$\newline$ - Corvus (crows) and Columba (pigeons) are birds, which typically have a crop and gizzard.$\newline$ - Chameleons are reptiles and do not have these additional chambers.$\newline$ - Therefore, this option is incorrect.$\newline \bullet$Option 2: Bufo, Balaenoptera, Bangarus$\newline$ - Bufo (toads), Balaenoptera (whales), and Bangarus (kraits) do not have a crop and gizzard.$\newline$ - Therefore, this option is incorrect.$\newline \bullet$Option 3: Catla, Columba, Crocodilus$\newline$ - Catla (a type of fish) and Crocodilus (crocodiles) do not have a crop and gizzard.$\newline$ - Columba (pigeons) do have these chambers, but not the other two.$\newline$ - Therefore, this option is incorrect.$\newline \bullet$Option 4: Pavo, Psittacula, Corvus$\newline$ - Pavo (peacocks), Psittacula (parrots), and Corvus (crows) are all birds.$\newline$ - Birds typically have a crop and gizzard as part of their digestive system.$\newline$ - Therefore, this option is correct.$\newline$Thus, the correct answer is Option 4: Pavo, Psittacula, Corvus.