Which of the Following Is an Example of Baseline Data

Which of the following is an example of baseline data?

A) a worker tracking how often a child is able to engage in positive social interactions with others after participating in a social skills group
B) a member journaling how often they experience anxiety over the course of the group
C) a parent tracking how often they yell at their daughter after the first session of a parenting group
D) a member reflecting on how confident they felt speaking in groups as the group closed