Daniel: There are certain actions that moral duty obliges us to perform regardless of their consequences.
Daniel's 1st Claim
Sometimes, moral duty obliges us to perform certain actions regardless of their consequences.
Does Carrie imply that there are never times when moral duty requires us to do something, regardless of consequence? No.
Daniel's 2nd Claim
Just because an action fulfills a moral obligation doesn't establish that an action is morally good.
Does Carrie imply that fulfilling a moral obligation does establish that an action is morally good? Yes! She says the only thing that can be required for a morally good action is that it fulfills a moral obligation. If that's the only criterion to satisfy, then satisfying that criterion is sufficient to to establish that an action is morally good.
Daniel's 3rd Claim
If an action isn't performed with the right motivations, it can't be morally good.
Does Carrie imply that an action performed without the right motivations can be morally good?
Yes! She stresses that motivations aren't even under our conscious control, and thus the only thing that can be required for a morally good action is that it fulfills a moral obligation. If that's the only criterion to satisfy, then satisfying that criterion is sufficient to to establish that an action is morally good. Hence, someone who fulfilled a moral obligation, even with not-right motivations, would still have committed a morally good action.
Goal
Carrie pushed back against both of Daniel's last two claims, so we have two possibilities for the correct answer - whether or not fulfilling a moral obligation is enough to call an action morally good - whether you ALSO need the right motivations for an action to be morally good