Answer:
The correct answer is b. oral
Explanation:
Sigmund Freud's stages of development tell about the psychological development of the child which is based on the needs and demands of body parts. This theory was sexually based which tells about the five psychosexual stages from birth to adult.
The first stage is oral stage which is from birth to till the first year of the child. In this stage, the child feels satisfaction when he puts anything in its mouth. So at this stage, the child loves sucking, breastfeeding, biting to satisfy its oral needs.
Therefore the correct answer is b.oral.