How does voice affect credibility of a text

1he correct answer should be The voice must express a similar personality to all potential readers. The voice of the author is supposed to be interpreted similarly by all potential readers so it's important for it to not be unambiguous. Negativity and positivity are just points of view and both can successfully be presented if the voice is well used.-wolf93

ALSO: The voice must express similar personality to all potential reader-Daila

MORE: The voice affects consistency of tone and the amount of bias revealed. 
A positive voice is more credible than a negative voice. 
A negative voice is more credible than a positive voice. 
The voice must express a similar personality to all potential readers-me 

i hoped this helped and have a wonderful day :))