The answer is: B) silkworms.
“While sitting in her garden she deduced the secret of silk by watching the silkworms. She developed the process to remove the thread from the cocoon and set up silk cultivation farms and the weaving of the new cloth.” (Source: http://4kyws.ua.edu/SI_LING_CHI.html)
These organisms that consisted only of unicellular were called prokaryotes.
In the first image, those are fake ribs that are attached to the sternum through the costal cartilage
in the second image are real ribs since they are directly attached to the sternum
I think it’s B I’m not for sure
