In studying the bystander effect, a researcher is interested in looking at differences between prison guards in china and the united kingdom. the researcher is taking a in this cross-cultural study.

(a) eurocentric perspective
(b) egocentric perspective
(c) culturio perspective
(d) sociocultural perspective

The researcher is taking a sociocultural perspective in this cross-cultural study.

Explanation:

The bystander effect is a psychological claim people are not interested or willing to "help a victim" when others are present. The more "number of bystanders", the smaller number of people will help. The factors which contribute this effect are ambiguity, responsibility and cohesiveness.  

Human learning usually involves the socio-cultural perspective of the person. According to Vygotsky, a person’s socio-cultural aspects depends on his way of interaction with people, the focus on parents, peers and relationships.