(n) a0 is used to measure how trustworthy someone or something is, such as when analyzing a narrative mode.

Credibility

Explanation:

Credibility is a measurement that is used to establish how trustworthy someone or something is. This is very useful when analyzing a narrative. Judging someone's credibility can tell us how likely it is that the character is telling accurate information. This becomes even more important when judging the narrator. Therefore, analyzing someone's credibility is very important when reading a narrative.

post the picture, without it i cant answer it. : )