Choice A rationale:

This statement is incorrect. Chronic hepatitis is a condition where liver inflammation lasts for more than six months. If hepatitis lasts less than six months, it is referred to as acute hepatitis.

Choice B rationale:

This statement is incorrect. Chronic hepatitis can be caused by enveloped single-stranded RNA viruses, specifically hepatitis B and C viruses. Non-enveloped single-stranded RNA viruses, like the norovirus, can cause acute gastroenteritis, but not chronic hepatitis.

Choice C rationale:

This statement is correct. Chronic hepatitis, particularly caused by hepatitis B and C viruses, can lead to serious complications such as liver cirrhosis, liver failure, and liver cancer. It is essential to manage chronic hepatitis carefully to prevent these severe outcomes.

Choice D rationale:

This statement is incorrect. Chronic hepatitis is not primarily transmitted through the fecal-oral route. Hepatitis A virus is transmitted through contaminated food or water and primarily spreads through the fecal-oral route. Hepatitis B and C viruses are commonly transmitted through blood contact, sexual contact, and from an infected mother to her baby during childbirth.