Discovered significant differences between organisms originally categorized under the monera kingdom; thus, these organisms were placed into two separate domains.

edward jenner
carl woese
carolus linnaeus

The correct answer is B. Carl Woese

Explanation:

Carl Woese was an American microbiologist mainly known for being the first one in adding the Archea domain to the taxonomical classification of organisms. Before, Carol Woese discoveries all prokaryotic organisms (unicellular organisms with no defined nucleus) were classified as the monera kingdom as it was though they all share the same characteristics. However, in 1977 Woese disproved this and showed some of these cells were different based on genetics and other features, this led to the modern classification of procaryotes in Archaea and Bacteria. Thus, it was Carl Woese the one that discovered significant differences in organisms that belonged to the monera kingdom.

the sphincter muscles at the end of the digestive tract is the anus.