A, Scientists need to continue studying what happens to players who get hit in the head.
Answer:

Explanation:
Nancy only believes that her brother is in Paris. Even if he is in Paris or he is not, Nancy cannot know for sure.
Answer:
Hamlet refuses to kill Claudius during prayer because he believed that Claudius would get a heavenly afterlife after being pardoned from his sins. In this time, a person was most pure after praying because of the washing away of their sins, but Claudius was admitting his wrongdoings and murderous ways meaning his soul wasn't pure anyways.
Answer:
Character
Explanation:
Authors will describe characters explicitly either by observation of another character or via a narrator. The purpose of this is to allow the reader to get to know the character intimately in order to use any behaviour that they display later as understandable based on how they were described when they were introduced.
Building the characters also allows the writer to engage the reader's emotions by giving the character likable, unlikable or relatable traits. These are often full of descriptive words and very intimate details about the Character that sometimes only they themselves will know.
Answer:
Argh! I can't remember a single thing! I feel slightly nauseous due to the fact that I must have eaten something bad. I just read an assigned chapter of an economics book. Normally I am so intrigued in economics as I really enjoy studying it but today I just don't feel in the mood. I can't remember a single thing that I read in the book. I guess I do deserve a break after studying so hard the past week. I flop down on my bed and immediately fall deep asleep.
Explanation:
btw, this is the first situation! hope this helps!