When does a communication difference become a communication disorder?

Communication disorders comprise language disorder, speech disorder, central auditory processing disorder, and hearing disorder. On the other hand, the communication differences comprise communication difference/dialect (social, regional, cultural/ethnic variation of a symbol system), and augmentative/alternative communication, that is, the systems, which tries to facilitate and compensate for the disability or impairment patterns.  

A communication difference is regarded as a disability in any of the following conditions:  

1. The faulty transmission and/or perception of the message

2. The individual is placed at a learning disadvantage

3. The individual is placed at a social disadvantage

4. There is a negative influence on an individual's emotional growth

5. The issue leads to physical damage or endangers the health of an individual.  

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.