Answer: More likely
Step-by-step explanation:
Insecure attachment is defined as the bond or connection in a particular relationship with presence of some kind of fear.This fear can be due to mixed feelings and past experiences. They do not see complete reliability and trust in other person.
According to the question , Antonio is more likely to be insecurely connected with his adoptive parents as he still lacks some trust and has fear in mind of being deprived in the bond. These feelings are due to little attention he got in orphanage.