<span>In 1899, President McKinley appointed "Leonard Wood" as governor over Cuba, since it was determined that Wood would do the best job in bringing the Cuban factions together. </span>
A primary source of anything is a first hand account be it a diary, eye witness account, the person must have experienced it themselves while a secondary the information could have been passed on for example a news paper or memoir on someones life.
The answer is:
C. The ash mixed with the typhoons rain became too heavy for roofs to support.