She uses the Radio-frequency identification(RFID) which is a technology that uses electromagnetic fields to automatically identify and track tags attached to objects.These tags contain electronically-stored information.the passive tags collect energy from a nearby RFID readers interrogating radio waves.They contain an integrated circuit and an antenna which are used to transmit data to the RFID reader also called an interrogator.
Answer:
Option B is the correct answer for the above question
Explanation:
XHTML is an advanced version of HTML language which is recommended by W3C. It set the standard in 26-JAN-2000 for the XHTML which belongs to the family of HTML. XHTML is made with the help of XML and also used like XML. It used to create more secure websites.
The Above question asked about the W3C recommendation but the above paragraph described that XHTML is a W3C recommendation. Hence Option B is the correct choice answer. while the other is not because--
- Option A suggests HTML 4.01 which is the updated version of HTML only.
- Option C suggests XML which is used to data transfer only.
- Option D suggests about DHTML but XHTML is a W3C recommendation
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