Topic: Group verb,

Best Answer Explained in Below-:

The phrase "His father comes to see him off" utilizes the phrasal verb "see off," which carries a specific meaning in English. To "see someone off" means to accompany someone to a place of departure, typically at a train station, airport, or another travel point, and bid them farewell as they leave.

In this context, the sentence suggests that the father is present to support and say goodbye to his child, emphasizing a moment of connection and care. The other options—"of," "after," and "away"—do not correctly convey this sentiment or fit grammatically within the sentence.

- **"His father comes to see him of"** is incorrect as it does not form a meaningful phrase.
- **"His father comes to see him after"** suggests a temporal relationship but does not imply a farewell.
- **"His father comes to see him away"** is also meaningless in this context.

Thus, "see off" is the correct phrase to express a poignant moment of bidding farewell, making option D the only appropriate choice.