Final answer:
The terms "the most restrictive taxon" and "the ability to breed only among themselves" specifically relate to members of the same species option (e), which is the smallest and most exclusive taxon in the Linnaean classification system where organisms can interbreed and produce fertile offspring.
Step-by-step explanation:
The terms "the most restrictive taxon" and "the ability to breed only among themselves" specifically refer to members of the same species. In the Linnaean system of classification, the species is the smallest and most exclusive taxon. This system is hierarchical, ranging from a broad domain to a specific species.
Organisms within a species can interbreed and produce fertile offspring, distinguishing members of the same species from those of different species. The process of organizing and classifying these organisms based on evolutionary relationships is known as taxonomy and systematics.
Through this taxonomic classification system, organisms are grouped from the broadest category of domain to the most specific category, which is the species. As you move from domains to species, groups become more specific, and relevant organisms are more closely related.
For example, from the domain, you would categorize into kingdoms, and then further into phyla, classes, orders, families, genera, and finally, species.