Answer:
The correct answer is YOU
Explanation:
In the following sentence the subject pronoun is YOU.
When you are speaking about your sister and yourself.
A subject talks about who performs the action, in this case the action is are speaking and this actions is performed by the subject pronoun YOU.
your sister is an exampleof an object, it means who receives the actions and yourself is a reflexive pronoun
Science fiction – a genre of fiction dealing with the impact of imagined innovations in science or technology, often in a futuristic setting. or depicting space exploration. Exploring the consequences of such innovations is the traditional purpose of science fiction, making it a "literature of ideas".
The second one "mice's" because it's talking about the mice favorite spot also mice means one
