German A2 Level Question

The correct form is 'kleide' because the subject is 'ich' (I), so it should be 'Am Morgen kleide ich mich für die Arbeit.' 'Kleidet' is for 'er/sie/es', 'kleiden' is for 'wir/sie/Sie', and 'kleidst' is incorrect as it should be 'kleidest' for 'du'.