My friend, is from New York, makes me laugh. which

whose

who

whom

who

Explanation:

"who" is used to a subject of the sentence

"whom" is used to an object of the sentence

e.g. I always make my friend, whom isfrom New York, laugh.

"whose" is used to an possession of a subject/ object

e.g. My friend, whose apartment is in New York, makes me laugh.

Who

Explanation

gregor could have been bullying her

you can infer that to folke dude was spying for allied nations