Joanna Is Heading Up a Project with a Multi-Location Team

Joanna is heading up a project with a multi-location team of a dozen members. It is a relatively long-term project, which gives her the opportunity to build a team with a good sense of community. Which of the following tools will best help her to achieve this objective while still offering good security for her company's data?

A) webinars
B) instant messaging through Facebook
C) texting
D) instant messaging through an ESC platform
E) VOIP