Three-year-old Isaiah happily explores the attractive toys located in the dentist's waiting room while his mother is sitting nearby. However, if she goes up to the reception desk for a few moments, he will return to her side before going off to explore the toys again. Isaiah most clearly displays signs of:

a. insecure attachment.
b. object permanence.
c. secure attachment.
d. egocentrism.

Secure attachment.

Explanation:

The attachment theory in psychology explains the ways by which children are attached to their parents and other  things. This might also change the behavior of an individual.

The secure attachment may be defined in case of the children when children gets upset or distress from the things to which they are attached. But the children gets normal after sometime because they known that the attached thing will return back to them. Isaiah here display the sign of secure attachment.

Thus, the answer is option (c).

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