Which of the following best represents internal, horizontal communication?

You are recording your experiences, thoughts, and recollections through a microblog detailing your job search.

The Accounting Department and the Sales Department work together on a budget proposal.

You send yourself a text message as a reminder that you have a $2$:$00$ p$.$m appointment tomorrow.

The manager asks for a status update from a direct report.

As part of the Community Involvement Committee, you make a presentation to the group to propose organizing a pet vaccine clinic in partnership with the local humane society.