Read this paragraph from the section "Studying Space Microbes." A new study of the life forms, or organisms, living on the space station found that there are more types of life living there than there are in the carefully controlled rooms at the Jet Propulsion Laboratory on Earth. JPL is a government-funded space research center. The researchers also detected some tiny types of life on the station, or microbes, that could be harmful to human health.

Which word from the paragraph BEST emphasizes the scientific tone of the article?

A
organisms
B
carefully
C
government
D
detected