Answer:
Functional need
Explanation:
Functional need -
It refers to the needs of the human being , which are important for the survival , is referred to as functional need .
These are basic requirements which are important for the day to day activities of the people .
Hence , from the scenario of the question,
Sarah bought a cycle , but as soon as she realized that basket is important for keeping her bag and other item .
Hence, the need of basket is the functional need .