Refer to figures. 
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Area Navigation (RNAV) 
It is a method of navigation that enables an aircraft to navigate using predefined waypoints rather than relying solely on ground-based navigational aids, which require flying from one radio beacon to another. RNAV uses geographical coordinates for fixes, not conventional navigation aids.

CHART 10-3C: Standard Instrument Departure (SID)

• The conventional DKB 9B SID is flown using ground-based navigation aids such as VOR/DME, by following specific radials and distances.

CHART 10-3P: RNAV SID (OVERLAY)

• The DKB 9B RNAV SID (OVERLAY) is a conventional SID that can be flown with the help of RNAV equipment (GPS/GNSS, VOR/DME, DME/DME etc.) and is not solely dependent on ground beacons.

“10-3P: It utilizes GPS by inserting the waypoints into the FMS, and the pilot is not required to utilize the raw VOR/DME data.” → CORRECT. The aircraft follows waypoints that are defined by geographical coordinates, rather than by bearings and distances from ground-based navigation aids. These waypoints are inserted into the Flight Management System (FMS), and lateral guidance is provided by RNAV equipment like GPS. Therefore, the pilot is not required to utilize the raw VOR/DME data (i.e., VOR radials and DME distances from ground beacons) for flying the SID.

“10-3P: It utilizes GPS by inserting the waypoints into the FMS and requires the pilot to monitor the VOR/DME data.” → INCORRECT. Flying an RNAV SID (OVERLAY) does not exempt the pilot from monitoring conventional NAVAIDs, which must remain operational. Therefore, this option can also be considered technically correct.

“10-3C: It uses GPS, but the pilot has to monitor the VOR/DME data.” → INCORRECT.

"10-3C: GPS is not used, and the pilot is not required to monitor the VOR/DME data.” → INCORRECT. A conventional SID is designed to be flown using conventional radio aids like VOR, DME, or NDB. It is not dependent on RNAV equipment such as GPS. Its lateral guidance is defined by radials, bearings and distances from those aids. Therefore, the pilot must actively monitor the VOR/DME data.