According to bowlby, the basis of love is

According to bowlby, the basis of love is attachment.

Explanation:

John Bowlby's attachment theory suggests that children come into the world biologically preprogrammed to bond with others, as this will help them survive. According to Bowlby, attachment itself is the main basis for the development of love, both fraternal and romantic.

John Bowlby was a psychiatrist and psychoanalyst who believed that mental health and behavioral problems could be attributed to early childhood. This author was influenced by the ethological theory in general, but especially by the study of the importance of Konrad Lorenz. In the 1950s, in a study of ducks and geese, Lorenz demonstrated that attachment was innate and therefore, besides having a survival value, is the basis of love.

answer; i believe the correct answer is prefrontal cortex;