Answer:
d. all of these answers
Step-by-step explanation:
RFID is radio frequency identification which uses the concept of electromagnetism to track and identify the tags that are attached to it. RFID contains electronic chips that stores information. The radio transmission waves transmitted by the chip allows the object to be tracked.
It is useful in many applications. It will help track and locate the missing children when they are lost when the tags are attached to the children. It can also help the law enforcement people to track down criminals by receiving the radio signals from them. It has its application in hospitals in tracking patients records and conditions. Thus it has numerous applications.
Hence the correct option is -- option (d)