Final answer:
Peter L. Berger emphasized the need for sociology to integrate macro-level and micro-level approaches.
Step-by-step explanation:
The sociologist who emphasized that sociology should strive to bring together the macro-level and micro-level approaches to the study of society is Peter L. Berger. In his book Invitation to Sociology: A Humanistic Perspective, Berger describes a sociologist as someone concerned with understanding society in a disciplined way and having an interest in both monumental and everyday occurrences. Sociologists study all aspects and levels of society, including small groups and individual interactions (micro-level) as well as trends among large groups and institutions (macro-level).