Toilets Are a Modern Convenience That People Often Take for Granted

Multiple Choice

Toilets are a modern convenience that people often take for granted. In fact, they are helpful in preventing spread of disease because ________.

A) disease-causing insects die quickly in fecal-contaminated water
B) toilets disinfect human feces
C) many diseases are transmitted by flying insects
D) many parasites release fertilized eggs in the feces of humans and other animals