4 years for being appointed.
Brainliest please!
Answer: <u><em>Preoperational</em></u>
Explanation: Piaget created four stages, which he classified the stages of children til twelve years old. The <em>Preoperational</em> is the second stage in his theory, the child enters the phase around 2 years old until 7 years old. In this stage, the children start to engage in symbolic way, play and learn to manipulate symbols. Is a very important stage for the child. Because the symbolic is being developed.
S-waves or also called as secondary waves and shear waves is one of the type of elastic waves and have many characteristics but according to your choice the fact or sentence that is not true about S-waves is that they change the volume of material by compression and expansion. S-waves didn't change the volume of the material by compression and expansion.
