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.)
Answer: a fellow researcher was poisoned With Venom by (carelessness), and I had to inject a substance into them to prevent a deadly reaction. It was too fast to be scary until LATER!
Explanation: