The idiographic approach to personality has advantages. For example,

A) researchers can compare all people on measures of a certain trait.
B) it reveals common traits.
C) the person rather than the researcher determines what traits to examine.
D) it provides information about the relationship between traits and behavior.

The idiographic approach allows the individual to determine which traits are relevant to their personality, which can provide a more comprehensive understanding of their unique characteristics. This approach also emphasizes the importance of subjective experience and personal narrative, which can be valuable in therapeutic settings. However, it may not allow for comparisons between individuals or reveal commonalities among groups of people.