Answer:
bat research for what purpuse? like what can whatever they've found be useful in the scientific community?
Explanation:
The correct answer is sympathetic.
If you read Beowulf, you will see that Grendel is a vicious monster who doesn't care about humanity at all - people are there just for him to eat. On the other hand, if you read Grendel, you will see what happened from his point of view - that he is not just a brainless beast, and that he has thoughts and feelings.
In the first sentence, the "he" is a nominative as it is a subject.
In the second sentence it is an object as the form "me" is actually "I", but "i" is a nominative form and "me" is an objective form.
In the third sentence "Us" is also used in objective form as "us" is an object of an action by "my sister".