def approve_hit(self, assignment_id):
        """Approve the HIT."""
        from psiturk.amt_services import MTurkServices

        self.amt_services = MTurkServices(
            self.aws_access_key_id,
            self.aws_secret_access_key,
            self.config.getboolean(
                'Shell Parameters', 'launch_in_sandbox_mode'))
        return self.amt_services.approve_worker(assignment_id)