According to Sigmund Freud, the .a. ego develops through interactions with parents. b. superego is the conscious, rational part of personality. c. ego is the largest portion of the mind. d. id is the source of basic biological needs and desires.

Answer is option "d"

Explanation:

The id is the main component of personality that is available from birth.  This part of the personality is totally oblivious and incorporates intuitive and crude practices.   As indicated by Freud, the id is the wellspring of all clairvoyant vitality, making it the essential segment of personality.The id is driven by the joy rule, which makes progress toward quick satisfaction, all things considered, needs, and needs. If these necessities are not fulfilled promptly, the outcome is a state nervousness or pressure. For instance, an expansion in yearning or thirst should create a quick endeavor to eat or drink.Hence, the right answer is option d "Id is the source of basic biological needs and desires".