The correct answer is - B.) expelling the Qing dynasty.
Sun Yat Sen is considered the father of the modern Chinese nation. He was the leader of the Nationalist Party, and his prime goal was that the Han Chinese expel the Qing Dynasty and have their country in their own hands again. The revolution was successful, and the Han Chinese managed to defeat the Manchurian Dynasty, thus taking their land into their own hands again.
Sun Yat Sen became the first president of China, but he resigned soon after, and went to fight against the warlords that still controlled parts of China. During his life, the Nationalist Party allied with the Communist Party, though after his death that coalition broke apart and they became enemies and fought against one another.
