The correct answer to this open question is the following.
The historical circumstances that led to Mao Zedong’s delivery of the speech entitled "Proclamation of the Central People’s Government of the People’s Republic of China," were the following.
Mao Zedong (1893-1976) led the Communist Army during the Chinese Civil War. He led the troops that defeated the Nationalist Army and that is why he became the leader of China and got to power in 1949. After led almost 100,000 people in the so-called "Long March," Mao counterattacked and defeated the troops of Chiang Kai-Shek. So on October 1, 1949, in front of his followers gathered in Tiananmen Square, Mao established the Communist government of the People's Republic of China.
This is definitely false. Gymnosperms do use seeds but are exposed like the pine cones of pines. Angiosperms still have seeds, however, they flower or fruit (which can are seeds).
Need more insight but from the 1800s it’s probably D because people in those times were very religious, and to have a education you were either a monk or a noble.