The answer is D...........APEX
The accelerated growth and advances in taxonomy as a science occurred during C. The Renaissance
The first advance in biology, during the Renaissance was Andreas Vesalius' 1543 treatise on human anatomy and later in 1545 the foundation of the first botanic garden in Padua, Itlay. After this the act of classifying zoological and botanical information developed into a science.
The main concern of the United States' regarding their former ally, the Soviet Union is the thought and predictions that someday the Soviet-style communism will take over the world. This may sound so threatening on their part because this would mean that there is a great possibility that they would be under the Soviet Union.