Final answer:
Ruth Benedict explained the congruency between personality and culture in her 1934 book 'Patterns of Culture' in terms of Cultural Relativity.
Step-by-step explanation:
In her 1934 book Patterns of Culture, anthropologist Ruth Benedict addressed the congruency between personality and culture primarily in terms of Cultural Relativity. Cultural relativity acknowledges that the values and standards of a culture affect the behavior of its members. Benedict argued that individuals' personalities are shaped by the cultural norms and values that are prevalent in their society. This concept implies that personality traits and behaviors are not universal but are influenced by cultural factors, thus varying across different societies.