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 faecal-contaminated water
B) toilets disinfect human faeces
C) many diseases are transmitted by flying insects
D) many parasites release fertilised eggs in the faeces of humans and other animals