Understanding That If 6 + 3 = 9,then 9 -

question 103

Multiple Choice

Understanding that if 6 + 3 = 9,then 9 - 6 = 3 is an example of:

• A) decentering.
• B) conservation.
• C) preoperations.
• D) reversibility.

---

Definitions:

Dental Plaque

A sticky film of bacteria and substances they produce, which accumulates on teeth and can lead to dental caries and gum disease if not regularly removed.

Surgical Implants

Medical devices placed inside the human body during surgery for the purpose of supporting or replacing an organ or structure.

Sexual Reproduction

A biological process that creates a new organism by combining the genetic material of two organisms.

Streptococci

A genus of coccus (spherical) bacteria that usually forms chains; known for causing various infections in humans and animals.