Final answer:
Jennabel assigned a gender to her baby by painting the room pink with unicorns and flowers.
Step-by-step explanation:
Painting the baby's room pink with unicorns and flowers is a form of gender stereotyping and social conditioning. What just happened to the baby is that they were assigned a gender based on their biological sex. The color pink and the theme of unicorns and flowers are traditionally associated with femininity, and by painting the room this way, Jennabel is expressing her expectation for her baby to conform to societal stereotypes of girls.