Incomplete question, What is the answer to Part A ?
Some people might say it is even good to mention incomplete projects, It's even better to have something already done. I would say that it would be fine to mention it, might even help.
Answer:
Eliana Rodriguez, who teaches biology, is my favourite teacher because she gives engaging lectures.
Explanation:
The part of teaching biology is an add on in this case. Because of that, it has 2 commas surrounding it. This would make it the correct answer
(I know I have it spelt as favourite, no it's not wrong, just different english.)
The answer is either C or A