Teaching children with autism spectrum disorder how to break down a large problem into smaller tasks, self-monitoring of language, relaxation training, and covert conditioning and introducing small changes in the child's environment are all methods derived from which theoretical perspective?

Behavioral Perspective

Explanation:

The fact that "small changes are introduced in the child's environment" can be taken as a good example of behavioral perspective since the ones that work with this idea consider that evironment has an important influence in behavior. They have the conception that when interacting with a given environment an individual can develop certain attitudes and responses.

what questionnaire?

i think its pulmonary not sure tho