If a child develops into a person who integrates into society and maintains a good awareness of safety, Freud may say that person has a well-developed .

The answer is ego.

Explanation:

According to Sigmund Freud, human personality is divided into three fundamental structures: the Id, the Ego, and the Superego. While the Id is driven by instinct and immediate pleasure, the Ego intends to regulate those impulses and turn them into more realistic alternatives.

For example, an angry person might feel the need to hurt someone (this is driven by the Id). The Ego will refrain these urges and likely will release them in a more socially acceptable way, such as playing a sport.

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