Which sentence from the above passage offers support for the following thesis? 'While ancient surgical procedures would horrify most modern people, it is amazing to consider the level of sophistication early healers possessed."
A. "Galen was a Roman citizen, and he lived in an area of the Mediterranean that is today part of Turkey."
B. "Many businesses in ancient Egypt also provided medical insurance and sick leave for workers."
C. "In fact, the medical tools Galen invented are very similar to tools modern doctors use on a daily basis."
D. "He read ancient works from the Egyptian doctor Imhotep who lived in the second millennia B.C."