Historian: We can learn about the medical history of individuals through chemical analysis of their hair. ██ ██ ███████ ███ ████████ ████ █████ ████████ █████████████ ████████ ████ ███ ██ ███████ ██████████ ██████ ██ ███████ ████ █████ ██ ███ █████ ████████ ██ ███ █████ ████ ██ █ ████ ██ ███████████ █████ ████████ ██ ██████████ ████████ ███ █████ ████ █████████ ████ ███ █ ████████ ████████ ████ ██████ ███████████ ████ ████████ ███████ ██████ ███ █████████ █████ ███████ ███ ████████ ████████ ██ ███████████ ████ ██ █████ ████████ ████████ ██ ███████████ ████ █ █████ ██ ███████ ██ ███ █████ ██ ███ ████████ ████ ████ ██████████ ██ ████████
The author concludes that if we find mercury in Beethoven’s hair, we can conclude that venereal disease caused Beethoven’s deafness.
Why?
Because mercury was commonly taken in Beethoven’s time to treat venereal disease.
The author assumes that the mercury in Beethoven’s hair, if found, could only be due to ingestion for the purpose of treating venereal disease. This overlooks the possibility that Beethoven might have taken mercury for a different reason.
Which one of the following ██ ██ ██████████ ██ █████ ███ ███████████ ████████ ████████
None of the ███████ ██████████ ████ ███ ████ ███ ██ ███████████
Some people in ███████████ ████ ███ ███ ██████ ████████
Mercury is an █████████ █████████ ███ ████████ ████████
Mercury poisoning can █████ ████████ ██ ██████ ████ ████████ ████████
Beethoven suffered from █████████████ ████████ ██ ███ ████ ████████ ██ █████████