Answer:
The killer had left a trail of blood on the floor
Answer:
"research is not a straight line" can mean that it takes trial and error plus lots of effort to get the research needed/getting research isn't easy
I would say shame, since the line says "repentance", which means to express that you are sorry for something. You would do this usually if your are ashamed of something you did and want to apologize.
Answer:internal conflict: battling sadness, controlling a temper, deciding to study more. External conflict: battling storm, arguing with a friend, believing a rule is unfair.
Explanation:
