Answer:
a. Acer rubrum and acer sucre
Explanation:
The acer sucre and acer rubrum are more related to each other, since in fact, we can see in the taxonomy of their name that they belong to the same genus. The genus is indicated in the first name of the species
The acer species refers to the trees that have characteristic tips in their leaves and a suitable wood with a hardness that in antiquity was ideal for the manufacture of spears. More popularly it includes a group of species of Arces
The pseudotriton rubrum is a kind of Salamander