Answer:
Social.
Step-by-step explanation:
A dual relationship is described as a relationship that involves several or multiple roles or relationships between the client and the therapist other than their therapist-client relationship. 'Social dual relationship' exemplifies a type of dual relationship that involves a friendly or any other social relationship between the client and the therapist.
As per the given situation, 'social dual relationship' has been exemplified here as 'the client's family's insistence to Matt(therapist) to stay over for dinner' and Matt's acceptance of the offer reflects that they share a friendly and affectionate bond other than their client-therapist relationship. Thus, the 'social' dual relationship is the answer.