When a developmentalist observes an infant showing flexibility with respect to the proximity he seeks and maintains between himself and his caregiver, and the infant remains calm while playing, the developmentalist would likely describe this infant as attached?

The Answer is securely Attached. This occurs when the parents have developed in the child greater security and confidence in their own abilities, which is why the child is more likely to explore their environment, have greater confidence in themselves, and develop greater empathy and closeness towards others.

I hope my answer can help you.

Iwould say the answer would be b