Answer: D. It is the person or thing to whom or for whom the verb's action is intended.
Explanation: The indirect object is usually found between the verb and the direct object.
Example: John gave Tamara a bracelet. "gave" is the verb; "bracelet" is the direct object
Sometimes the indirect object is a reflexive pronoun (ending in -self).
Example: I bought myself a new phone. We threw ourselves a big party.
Verbs that express an action of giving and receiving usually have an indirect object, or a prepositional phrase that serves the same purpose.
Example: We brought the children toys and candy. We brought toys and candy to the children. <<= prepositional phrase
Most sentences with direct objects do not have indirect objects.
The dog chased the squirrel. The squirrel ate an acorn. I finished the sentence.