Nina has the habit of eating non-food substances. nina's behavior is considered abnormal becausea. it is deviantb. it is adaptivec. it is unobservabled. it cannot be measured

It is deviant

Explanation:

Abnormal behavior is related when we do something that is not considered under the norms of society. There are some criteria under which a person's behavior is diagnosed whether the person's behavior is normal or abnormal.

The behavior is diagnosed under DSM-V or ICD-10. When Nina shows a behavior like eating something that is uneatable things considered to be abnormal behavior. Nina has been diagnosed under some criteria. She is suffering from an eating disorder. Her behavior does not come under normal behavior. Her behavior is not accepted under the norms of society.

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