You are leading a cross-functional team on a project with a tight deadline. The project requires expertise in design, development, and marketing. After conducting a skills assessment, you discover that the team members' strengths are not evenly distributed across these areas. Which of the following strategies would be most effective in organizing the team to leverage their strengths while ensuring the project's success?
Outsource tasks to external experts in areas where the team lacks strength
Encourage team members to work on tasks outside their areas of expertise for growth
Provide training to team members to bridge the skill gaps
Create sub-teams based on expertise and facilitate cross-functional collaboration