Answer:
1. Salut 2. Bonjour 3. Bonjour
Step-by-step explanation:
You use "Bonjour" when you are addressing adults or anyone older than you. Think of it as a greeting to someone that you would refer to as Madame or Monsieur. It is seen as formal.
You use "Salut" when talking with friends or anyone younger than you. It is casual and is a sign of friendliness.