the author used it to clarify the meaning of a certain thing or character
Answer:
Capitalization Error
Explanation:
This sentence contians a capitalization error, because the word "doctor" should not be capitalized.
In the tense that is it being used, it is a common noun, therefore requires no capitalization.
If the sentence was Doctor John does not make house calls., then yes, it would be capitalized.
1. he said he was an aerospace engineer
2. she says she works in the National History Museum
3. the Doctor said their son studies at university
4. the Astronaut said they are in space
5. He says he teaches physics to his friend
6. Mother says she loves the youngest girl