Final answer:
An anthropologist studying ethnic-religious conflict in contemporary Sri Lanka would most likely be in the field of Social Studies.
Step-by-step explanation:
An anthropologist studying ethnic-religious conflict in contemporary Sri Lanka would most likely be in the field of Social Studies. Sri Lanka has experienced conflicts arising from differences in religion, ethnicity, and politics, leading to a low-level civil war. Understanding these dynamics would fall under the purview of social studies, which examines the relationships between individuals, societies, and institutions.