b. ability to communicate the party platform clearly
"Laissez-faire means non-interference and is in the best interest of the nation" would be the best option from the list, since governments that take this mentality have a "hands-off" approach to the economy.
A historian using the thinking skill of primary source analysis might try to "get in the mindset" of the writer or speaker of the source in question, in order to gain more insight into their life and environment.