Final answer:
The taxonomic group that contains the most species among the options given is the Order Carnivora, which includes a broad range of diverse carnivorous mammals.
Step-by-step explanation:
The taxonomic group that would contain the most species is the Order Carnivora. Taxonomic categories are organized hierarchically, with each subsequent category encompassing a larger and more diverse group of organisms. The hierarchy ranges from the most specific (species) to broader categories (genus, family, order, class, phylum, kingdom, domain). Therefore, Order Carnivora, which includes both cats and dogs, contains a greater number of species than any other option listed, as each of the other options (Genus Panthera, Family Felidae, and Species Panthera pardus) represents a subset within the order.
For taxonomy classifications, it is understood from basic principles that the order is larger than family, which in turn is larger than genus, which is larger than species. So, among the choices given, Order Carnivora would have the widest diversity and the largest number of species. This order is part of the class Mammalia and contains a wide variety of carnivorous mammals that share common traits but are also distinguished by a broad set of characteristics.