Question

the national crime victimization report (ncvr), a self - report study that gathers crime data from individuals and provides more detailed accounts than those provided directly to law enforcement, has one disadvantage in that it
fails to ask biographical questions regarding age, race, gender, income level, or location.
is undermined by exaggerations and the faulty exercise of memory
does not account for crimes that have not been officially reported to law enforcement agencies such as local police or the fbi
misses some groups, such as those who dont have telephones and those who move frequently or are experiencing homelessness

Explanation:

Self - report studies rely on individuals' own accounts. Exaggerations and memory issues can distort the data. The NCVR, being a self - report study, is affected by these factors. It does ask biographical questions, accounts for unreported crimes in its own way, and while it may have some sampling issues, the main drawback is the unreliability due to human memory and exaggeration.

Answer:

is undermined by exaggerations and the faulty exercise of memory