The corrcet answer would be relational.
Answer:
1. Part that includes subject and main action
- Dr. Nima Mesgarani and his team are developing
2. Part that is a detail about the subject
- Professor of electrical engineering
3. Part that is the outcome of the main action
- technology that may someday translate people's thought into electronically produced speech.
Explanation:
I have been able to match each sentence to the part the question answers.
In no. 1 you discover that it mentions the name of the subject and his team and also informed us the action they are carrying out: "developing".
In no. 2, we see that the information/detail of the subject was clearly stated, that he is "Professor of electrical engineering".
In no. 3, we are giving the outcome of the main action. The outcome is that the technology that is being developed may someday translate people's thought into electronically produced speech.
The purpose of an essay is determined by your goal as a writer, as well as your subject matter.
