1. No one answered the ad but me.
Answer:
preposition
Explanation:
In the sentence "No one answered the ad but me", the word" but" is a preposition meaning "with the exception of; except".
cf. "No one answered the ad except me."
2. There is but one choice to make in this case.
Answer:
adverb
Explanation:
In the sentence "There is but one choice to make in this case", the word but is an adverb meaning "only".
cf. "There is only one choice to make in this case."
Answer:
Frankenstein's goal after he became a student at the university is that he wants to create a new species of man
Explanation:
The events that led him to become a medical student gave him the idea of making a discovery, this was how to create life, and show that science could create a new kind of man, superior to the other men since it has come back to life, and this will explain the origins of life and will give the man the tools to cheat it.