Answer the following question given this paragraph: 

Example Problem: The density of steel is 9000. kg/m 3 and the density of water is 1000. kg/m 3 . If a cube of steel that is 0.100 m on each side is placed in a tank of water and weighed while under water, what is the apparent weight of the cube?.


Q: Cephalization refers to the development of what anatomical region, which evolved at the same time as bilateral symmetry in animals?

 Choices:

- tail

- chest

- heart

- head

A:
head
