Step 1: Understanding the Concept:
This question uses an early, now obsolete, classification system for levels of intellectual ability based on IQ scores. It's important to answer based on this historical context.
Step 2: Detailed Explanation:
The historical classification system for what is now called intellectual disability used the following terms:
Idiot: IQ score below 25 (the range 0-19 falls within this). This represented the most profound level of disability.
Imbecile: IQ score from 25 to 50.
Moron: IQ score from 50 to 70.
These terms are now considered highly offensive and have been replaced in modern diagnostics (like the DSM-5) with levels of severity (Mild, Moderate, Severe, Profound) based on adaptive functioning rather than just IQ scores. However, based on the historical terminology presented in the question, an IQ of 0-19 corresponds to the "Idiot" category.
(B) Average IQ is typically 90-110.
(C) Genius is typically considered an IQ of 140 or above.
Step 3: Final Answer:
Within the historical classification system, a child with an IQ between 0-19 would be placed in the "Idiot" category.