The author does not raise any possible alternative causes for the policy’s results, only concluding that the policy may not be successful in having its intended effect.

The author does not contradict an objection to a policy, but instead raises an objection to show that the policy cannot achieve its goal.

The author doesn’t bring up any problems with the policy’s implementation, including whether or not officials properly perform their duties.

The author never claims that the policy isn’t universally adopted. The issue is just that the policy’s scope is too narrow to meet its goals.

The author argues that the event of wild bats spreading rabies is likely to defeat the policy’s aim of preventing rabies. Quarantining imported domestic animals doesn’t affect wild bat activity, so this event falls outside the policy’s influence.