Answer: Generalized others
Explanation:
According to the theory of George Herbert Mead , generalized other is the term that defines about attitude and behavior displayed by the larger group of individual in symbolic interactionism. This factor helps a person to connect with the society.
This concept is found in childhood development process that refers to all other people linked with the individual.
As per the question's scenario, Shelia is developing the concept of generalized others.She is thinking about the other people while playing softball to work as the group.This process display that she is linking herself with other team members to play as team.