Answer:
After the Battle of Gonzales, he helped organize Texas's provisional government and was selected as the top-ranking official in the Texian Army. He led the Texan Army to victory at the Battle of San Jacinto, the decisive battle in Texas's war for independence against Mexico.
B. chief examiner.
A chief examiner would be someone or something else unrelated entirely. Perhaps a police chief or a medical examiner are the closest to a "chief examiner" anything.
The answer is Franz Joseph Haydn. :) good luck