To determine which animals have the closest evolutionary relationship based on a cladogram, we typically look at which species share a more recent common ancestor. Among the options provided:
- Humans and trout: Humans (mammals) and trout (fish) diverged quite a while ago, so their relationship is relatively distanced.
- Humans and lizards: Humans (mammals) and lizards (reptiles) also share a more distant common ancestor, but it's closer than the relationship with fish.
- Humans and wallabies: Humans (primates) and wallabies (marsupials) are both mammals, and their common ancestor is relatively recent in evolutionary terms.
- Humans and lampreys: Humans and lampreys (jawless fish) are quite distantly related, with a long evolutionary line separating them.
Based on this analysis, the closest evolutionary relationship is between humans and wallabies.