For that wedding invitation I need to add a little more to number 3. Like I don't understand what it means comment on how the form and content of each passage are related to the various social situations

Answer 1

The wedding invitation gives the recipient all the information needed about this formal occasion.

Answer 2

What do it mean by various social situations ?

Answer 3

Some examples of various social situations:

a backyard barbecue
a child's third birthday party
a club luncheon
a high school dance
a graduation party
a retirement party
a class reunion