I believe the third one is correct
Answer:
Mariana trench
Explanation:
it is so far down only 3 people in the world have traveled down there the rest that tried drowned.
B. Relief
The friends will obviously be relieved that they have found each other
Answer: The school uniform, then the dress code, then the middle schoolers
Explanation:
How about this: Sports will be fun and fair if everyone have good sportsmanship and knows the game well.