An administrator is adding A records to an existing zone.

Comprehensive and Detailed In-Depth Explanation:In the Infoblox Grid Manager (the NIOS GUI), DNS management is centralized under theData Managementtab, which provides a logical structure for handling DNS zones and records. To add an A record (Address record) to an existing zone, the administrator navigates toData Management > DNS > Zones, selects the specific zone, and then uses the "Add Record" option (typically a "+" icon or button). Option A focuses on member-specific settings, not zone record management. Option C drills into member services, which is more about service status than record editing. Option D is incorrect as "Grid > Services" doesn’t exist in this context—it’s a misnomer. The INE course covers practical DNStroubleshooting, reinforcing this workflow.References:Infoblox NIOS Administrator Guide – Managing DNS Zones; INE Course Content: NIOS DDI DNS Troubleshooting.