In the classification system this is a group of organisms with one or more related species

I'm pretty sure the answer would be "genus." A genus is a group of closely related species, first part of the scientific name in binomial nomenclature, and a binomial nomenclature is a system where two terms are used to classify species that are similar in some ways for example a cat, and a lion.

Hope this helps!

Nonportrit

i think it’s c but i might be wrong. if i am let me know! have a good rest of your day as well!