The accurate statement about ethnic groups in Southwest Asia is: B. Arabs are the largest ethnic group in the region.
While Arabs are a significant and widespread ethnic group in Southwest Asia, they are not necessarily the majority in every country in the region. Additionally, the claim that people in the same ethnic group follow the same religion is not accurate, as different religious groups can exist within the same ethnic community (e.g., there are both Sunni and Shia Muslims among Arabs). Kurds do not make up the largest ethnic group on the Arabian Peninsula; rather, they are primarily found in parts of Iraq, Turkey, Iran, and Syria.