(D) App Directory
The header section of the Hootsuite dashboard has three tools, the Message Composer which you can use to compose messages and posts for your social media accounts. The Account Settings where you can change your Account preferences to show you Notifications and the Quick Search which you can use if you want some help regarding anything.
The Sidebar has other tools like Streams, App Directory, Analytics, Publisher, and Planner.
This question is a part of the Hootsuite Platform Certification exam. You can get all the answers to the questions asked in this exam by visiting our Hootsuite Platform Certification exam answers page.