Answer:
Loyalty, kindness and humour
Step-by-step explanation:
If a friend isn't loyal, then they aren't your friend.
Kindness is such an obvious answer, but some people don't understand the difference between making jokes and just straight up hurting someone's feelings.
And humour is the first thing I personally look for in a friend. Being funny is the best because not only do you make everyone laugh but you're a mood raiser.