Philosopher: A person is morally responsible for an action only if that action is performed freely. And an action is free only if there is an alternative action that is genuinely open to the person. But an alternative action is genuinely open only if performing that alternative action is not morally wrong. If the philosopher 's statements are true, which one of the following must also be true? ['People are not morally responsible for most of the actions that they perform .', 'A person is morally responsible for an action if there is an alternative action that is genuinely open to the person.', 'An alternative action is not genuinely open to a person unless that person would be morally responsible for performing the alternative action.', 'An action is not free unless there is an alternative action that is not morally wrong.']