Answer:
b. a wiki
Explanation:
A Wiki is an electronic communication tool that works with resources similar to a website, but with the differential of the possibility of jointly editing authorized users while accessing the content, for updates, implementation of new information, resources, etc.
This tool would be essential for the marketing team with global sales representatives, because through it it would be possible to demonstrate the new resources through the sharing of information and exclusive materials made available through the wiki that can be accessed from any location and at any time.