Answer:
1) B - Use
2) The Braille Smartphone touch screen (Can be used to feel the raised pins);
The Braille Smartphone Pins (can create outlines of any image that a user can feel; Raise or lower to create combinations of words);
The Braille smartphone technology (Translates text to Braille)
3) A - He was motivated to improve Braille resources.
4) A & F
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Sorry it took a bit long. My dad told me to help him on something. :(
Hope this Helps!
:)