To determine which two animal species shared the most recent common ancestor according to a cladogram, you typically need to locate the branching points where they diverge from a common lineage.
From the options you've provided:
A) Primates and crocodiles
B) Sharks and birds
C) Birds and rodents
D) Birds and crocodiles
Without the actual cladogram to visually reference, the general understanding of evolutionary relationships suggests that:
- Birds and crocodiles share a more recent common ancestor than birds and rodents or primates and crocodiles.
- Birds and rodents, while related, likely diverged further back than birds and crocodiles.
Therefore, while I can't see the cladogram itself, the most logical answer based on common evolutionary knowledge would be:
D) Birds and crocodiles
If you can provide more context or specific features of the cladogram, I may be able to offer a more precise answer!