An Informal Gathering occurs when a group of people get together in a casual, relaxed manner. Which situation below is the best example of an Informal Gathering?

• The book club meets on the first Thursday evening of every month.
• After finding out about his promotion, Jeremy and a few coworkers decide to go out for a quick drink after work.
• Mary sends out 25 invitations for the bridal shower she is giving for her sister.
• Whenever she eats at the Mexican restaurant, Clara seems to run into Peter.