With testing, can the causes of all developmental disabilities be identified?

The correct choice highlights that we currently do not have the capability to identify the causes of all developmental disabilities through testing. Developmental disabilities are a diverse group of conditions that can arise from a combination of genetic, environmental, and biological factors. While advancements in research and testing techniques have enabled the identification of some causes, such as specific genetic mutations or prenatal exposures, many developmental disabilities still lack a clearly defined cause.

This complexity arises from the multifactorial nature of these disabilities, where different factors may interact in ways that are not yet fully understood. As a result, there is no comprehensive testing method that can pinpoint every potential cause.

The other choices do not accurately capture the current understanding and limitations within the field. Thus, asserting that it is false to say all causes can be identified reflects a realistic view of our current capabilities in diagnosis and understanding of developmental disabilities.