Explanation
Disabling Grant Access Using Hierarchies for the object and creating a sharing rule to enable sharing to the Director of Support are the steps to ensure proper sharing in this role hierarchy structure. This way, the Team Leads will not have access to the Reimbursement records of their subordinates, but the Director of Support will have access to all Reimbursement records. Option A is incorrect, as setting the View All permission on the profile will grant access to all users with that profile, not just the Director of Support. Option B is incorrect, as changing the owner of the Reimbursement record will remove the access from the original submitter. Option D is incorrect, as by default, Grant Access Using Hierarchies is enabled for custom objects, which means that Team Leads will have access to their subordinates' Reimbursement records.