Final answer:
The text's statement about Indonesia having an overwhelming Muslim majority is corroborated by the data showing that over 85% of the population follows Islam.
Step-by-step explanation:
The idea from the text about Indonesia that is corroborated by the information provided is that Indonesia has an overwhelming Muslim majority. Although more than 85% of the population follows Islam, Indonesia is a secular state with a civil code of laws. The nation recognizes other religions officially, which include Christianity, Hinduism, Buddhism, and Confucianism. Despite being a country with the largest Muslim population, Indonesia supports a variety of religious holidays including Christian and Hindu holidays, showcasing its commitment to religious tolerance.