Researchers assessed the personalities of the children who were adopted at an early age by Julene and Jay. The researchers compared the children's personalities to those of their biological and adoptive parents. Based on the studies described in the text, the children's personalities will be most similar to .

The children's personalities will be most similar to their biological parents’ personalities.

Explanation:

Generally, the results obtained from many researchers and hundreds of studies carried out on the personalities of children who were adopted at an early age, have revealed that the personalities of adopted children are more similar to those of their biological parents who did not raise them, than those of their adopted parents who raised them.