Choice D rationale:

Viral meningitis is usually transmitted through direct contact with respiratory droplets. It can also be spread through contact with fecal matter and other body fluids. In contrast, bacterial meningitis has multiple routes of transmission, including respiratory droplets, direct contact, and contaminated food or water.

Choice A rationale:

Ingestion of raw or undercooked snails or slugs is associated with a parasitic infection called "rat lungworm" and not viral meningitis.

Choice B rationale:

While the infected person can act as a vector for the spread of viral meningitis, the primary mode of transmission is through respiratory droplets and not the human body itself. The reservoir for viral meningitis is often human carriers, but it can also exist in other animals or environmental sources.

Choice C rationale:

Neisseria meningitidis and Streptococcus pneumoniae are bacterial pathogens that can cause bacterial meningitis, not viral meningitis.

Choice E rationale:

Viral meningitis is not caused by a fungus, and environmental sources are not the reservoirs for viral meningitis transmission. It is mainly transmitted from person to person.