foreach (Question q in questions)
{
    foreach (QuestionValue qv in q.QuestionValueList)
    {
        if (m_User.OrganizationRole.QuestionValuePermissionList.Where(p => p.QuestionValue.QuestionValue_Id == qv.QuestionValue_Id).Count() == 0)
        {
            int i = questions.FindIndex(p => p.Question_Id == q.Question_Id);
            QuestionValue item = questions[i].QuestionValueList.Find(p => p.QuestionValue_Id == qv.QuestionValue_Id);

            questions[i].QuestionValueList.Remove(item);
        }
    }
}