Answer:
I believe that this is a complex sentence.
Explanation:
This is because there is one independent clause and two dependent clauses.
B. Grandfather, because in the sentence "grandfather" is used to address him... it's used as his name.
Answer:
After Lowell discovered Pluto, the discovery of Eris
led to questions about Pluto's status as a planet.
Answer:
Icarus crashing into the sea. I hope this is helpful.
Explanation: