Answer:
Formal: attending a wedding, meeting with a principal, interviewing for a job.
Informal: eating at a picnic, watching TV, playing sports with friends.
Explanation:
A formal occasion is an event that is more official, involving people of high positions, respected people, famous people. This event requires a certain level of dress code, or appearance and behavior.
An informal occasion is an event that is without any limitations, more like a gathering between friends, relatives, close associates. This event does not require any restrictions regarding how one dresses for the event or behaves.
The given events or actions are listed as formal or informal occasions as below-
Formal: attending a wedding, meeting with a principal, interviewing for a job.
Informal: eating at a picnic, watching TV, playing sports with friends.
