need help answering this multiple choice question

You are the leader for a team of 20 members. One of the members, Stella, makes a complaint against Kai. Stella has been working at the organisation for nearly 2 years and is extremely competent and talented at her job. On the other hand, Kai has recently joined the team straight after school. Stella mentioned that Kai always ignores Stella's instructions but seems to follow the instructions given by other team members.

Indicate the correct order of the steps you will follow to address this problem.

Determine the reason why it's happening

Assess the situation

Generate possible solutions or alternatives to fix it

Implement the solution

Gather all information related to the situation

Assess cost/risks/benefits

Decide between alternatives

Determine whether the solutions are feasible

Monitor or re-evaluate the solution if required