Which Statement Concerning the Etiology of Autism Is Correct

question 38

Multiple Choice

Which statement concerning the etiology of autism is correct?

• A) The most common etiological basis of autism noted so far is parental neglect or detachment.
• B) The early lack of normal development suggests biological rather than psychosocial factors.
• C) Researchers believe that there is one cause for autism that has yet to be discovered.
• D) Although psychological effects are important, biological factors play the most critical role.

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Definitions:

Mechanisms

Detailed pathways and steps through which reactants proceed to form products in a chemical reaction, involving intermediates and transition states.

Reaction Mechanism

The step-by-step sequence of elementary reactions by which overall chemical change occurs.

Free-radical Polymerization

A method of polymerization that involves the polymer growth through the successive addition of free-radical building blocks.

BuLi

Short for Butyllithium, an organolithium reagent commonly used in organic synthesis to deprotonate acidic compounds and perform nucleophilic additions.