Answer:It is possible that the account of an eyewitness is unverifiable if the eyewitness is the only person who saw the event.
When something is verifiable, it means that there is evidence to back it up. If an eyewitness is to be verifiable therefore, there must be someone or something (camera) else that saw the events to corroborate what the person saw.
If there is no such person or thing to corroborate the eye witness's version of things, then we can say that the eyewitness account is unverifiable.
Other options are wrong because:
a biased eye witness can still be verifiable if someone else saw the incident
an emotional eyewitness is variable for the same reason
an eyewitness with multiple perspectives can still be verifiable if other people or things saw the incident
In conclusion, an eyewitness testimony can only be verified if multiple people (or things) saw the event.
Step-by-step explanation: