Question

skill 10 of 16 step 3 of 3 aa a(n) ___ code, which appears as a square filled with dots and lines, is often used to direct a smartphone to open a specific web address. a barcode b rfid c qr d ocr

Explanation:

Barcodes are linear patterns, RFID uses radio - frequency, OCR is for optical character recognition. QR codes are square - shaped with dots and lines and are used to direct smartphones to web addresses.

Answer:

C. QR