There is really no one aspect of David's experiences to support this theory or nurture because even though his parents tried to grow him as a female and he was played in an environment with other females, he still refused to act according to how a female should be.
Step-by-step explanation:
Gender identity reveals the gender of an individual. The gender identity is generally related with the person's assigned sex at birth or can differ from it. Gender expression typically reflects a person's gender identity.
Nurture can never change the gender identity. According to David’s experience, even though he was made to grow as a female, he couldn’t resist his male characteristic. David was usually allowed to play with the females in their environment, but still he refused to possess the action how females do.