This is too broad to support. There is not enough support to contend that we have no plausible chronology of “most” disputed events. The stimulus says that historians were unable to successfully date some events.

The stimulus says that historians “on occasion unsuccessfully” try to determine the date for an event after minimizing competing sources. This implies that there are at least some events that cannot be dated reliably.

This is too broad to support. The stimulus only concerns dates where the usual sources offer conflicting information, not “any event.”

This is antisupported. The stimulus suggests this method to date events.

This is too strong to support. The stimulus says that this is an approach, not that this is the soundest or best approach. Be wary of these strong words in answer choices! They can sometimes be supported, but make sure to double-check the stimulus for the support.