You are writing a paper on the 1911-1912 race for the South Pole, using a new scientific reconstruction of Antarctic weather conditions as one of your sources.

Which part of the research report would provide the best support for your thesis that the expedition that got to the pole first and returned safely succeeded because they had better weather?

A series of maps reconstructing Antarctic atmospheric conditions from 1905 to the present day

A description of the negative effect of sudden temperature drops on morale and endurance by a scientist currently working in Antarctica

A quote from a researcher describing how unusual the weather was that year

A chart showing estimated weather conditions along the routes of each expedition

The best support for the thesis that the expedition that got to the pole first and returned safely succeeded because they had better weather would be a chart showing estimated weather conditions along the routes of each expedition. This would directly show the differences in weather conditions experienced by each party and demonstrate how the favorable weather conditions of the successful expedition may have contributed to their success.