Custom actions your users by:
a. allowing them to create custom records
b. giving them more ways to open, view, edit, and delete custom records
c. making work feel more like playing a video game
d. making it fast and easy to interact with information in your organization

D. Making it fast and easy to interact with information in your organization.

Explanation: Custom actions are actions that can be performed on records using a specific set of criteria to execute functions. The following applies:

A. Allowing them to create custom records. Incorrect.

Although this is possible with custom actions, it is not the only benefit of using custom actions. That being said, there is a more correct answer in the multiple choice options that are given.

B. Giving them more ways to open, view, edit, and delete custom records. Incorrect.

Once again although viewing and editing records is a benefit of using custom actions, it is still not the main aim of using it. Moreover custom actions doesn't give users more ways to perform these tasks. This answer is similar to the option in A. as editing and deleting will inadvertently create a custom record in the end.

C. Making work feel more like playing a video game. Incorrect.

Custom actions help users customize their files in a convenient manner. This isn't related to video games in any way. So this doesn't apply at all.

D. Making it fast and easy to interact with information in your organization. Correct.

Custom actions has the ability to let it's users perform tasks such as creating, editing and deleting new records, sending emails, logging calls etc. This is done quickly and efficiently. The aim of this is to make users' workflow and navigation run as smoothly and efficiently as possible, which allows these users to quickly gain access to the most important info that that they may need.