1. Increased memory retention and decreased cost is the correct option for the most important benefits of using Virtual Reality in business training.

Virtual Reality (VR) can provide a highly immersive and interactive learning experience that can improve knowledge retention and engagement among learners. This is because VR can simulate real-world scenarios and provide learners with a hands-on experience that can be difficult to achieve through traditional classroom training. Additionally, VR can be a cost-effective training solution since it can reduce the need for expensive physical equipment and travel costs associated with traditional training methods.

Why other options are wrong?

Option 2) Compliance with travel and security regulations is not a significant benefit of using VR in business training since this is not a primary objective of using VR technology in training.

Option 3) High video resolutions and ultra-realistic graphics may enhance the user experience, but they are not the primary benefits of using VR in business training.

Option 4) Collecting users' personal data for marketing purposes is not a benefit of using VR in business training, and it could be a significant concern for learners and organizations in terms of data privacy and security.