Required Answer:- 
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A friend: The student said that he wanted to know more.
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1. Student: "I want to know more
Teacher: What did he say?
A friend: The student said that
A) I want to know more
B) He want to know more
C) I wanted to know more
D) he wanted to know more ✅ 
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Additional information:-
These types of sentences are called Speech.
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 There are two types of Speech. 
- Indirect Speech
 - Direct Speech
 
Student: "I want to know more is direct speech.
A friend: The student said that he wanted to know more is indirect speech!
Here we have changed the Tense of want to wanted.
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