Ourselves is the pronoun and i believe it's reflexive
I think this is more of a personal opinion. I dont think that it is “slavery” in the traditional way we think of it back when people owned slaves. I was going to play college golf but i decided not to because when you sign those papers, the university “owns you” in the sense that youll do whatever they want because theyre letting you go to college for free in exchange for your athletic ability.
Answer:
Microorganisms have adapted to inhabit almost every corner of the world. They live in the oceans and lakes, where they provide a valuable food source for larger organisms. They live on land where they may the decay of dead organic material, recycling valuable nutrients. ... Many microorganisms cause disease in humans.
^^ I definitely agree with this comment
A. or "The family is letting us stay at their cottage"
The other one makes no sense in proper grammar