Indirect object pronouns have the same form as direct pronouns except in third person.
Step-by-step explanation:
Indirect object pronouns are used to replace or refer to the indirect object of a verb, indicating to whom or for whom an action is performed. In most cases, indirect object pronouns have the same forms as direct pronouns, except for the third person.
For example, in Spanish:
- Direct object pronouns: me (me), te (you), lo/la (him/her/it), nos (us), os (you all), los/las (them).
- Indirect object pronouns: me (to/for me), te (to/for you), le (to/for him/her/you formal), nos (to/for us), os (to/for you all), les (to/for them/you all formal).
Here, you can see that the third person indirect object pronoun "le" is used instead of the third person direct object pronoun "lo/la" or "los/las".
Therefore, the correct answer is d. Third person.