Which of the following are reliable sources of post-secondary information?
peterson's collegeboard. c*m (not letting me put it so i put a * of o)
an institution or organization's website all of the above ***

The correct answer for the given question above would be the last option which is all of the above. The following that are considered as reliable sources of post-secondary information would be Peterson's collegeboard dot com, and an institution or organization's website. Hope this answer helps.