Answer:
a. Stylus
Step-by-step explanation:
-A stylus is a tool that has the shape of a pen and it is used to select options on devices that have a touchscreen.
-A biometric scanner is a device that checks the identity of people based on features like fingerprints and iris.
-A keyboard is a group of buttons that allow to write on a computer.
- A NFC device is a technology that allows two devices to share information when they are close to each other.
According to this, the device that the store owner should recommend to help a person with accessibility issues input instructions into a laptop by using a pen is a stylus.