When an employee joins an online group that shared tips with one another about common problems related to their job tasks, the group is using social media in a. onboarding b. training and development c. recruitment and selection d. performance management

Training and development

Explanation: In the given case, the employee is joining the online group with the intent of solving problems that is related to their task, hence, he is trying to self train himself through the help of others and is trying to develop his skills. The knowledge he gains from the group members will help him to better his performance in the job.

Thus, from the above we can conclude that the right option is B.

answer; normative economics;