Respuesta :
The correct answer for the question that is being presented above is this one: "the mammal and the reptile." The additional piece of information will be most helpful to Julia to properly build her phylogenetic tree is that it is trying to figure out on what tree it belongs to but it has some features of the animals but the 2 main ones: the mammal and the reptile.
Hey. The correct answer would be : The platypus lays eggs like a reptile :)