I believe b is the correct answer
Machines can serve as both a help and a hindrance!
Answer:
The second missed out full stop at end.
The third answer is wrong as however is in lower case.
The fourth is as well as wrong the however is in lower case.
The last missed out full stop.
So, the first is correct as however dont really nessasarily need comma.
Answer:
Its either the first option (on the left)
or the bottom option on the left
(other words its either "A study found that playing certain games gave students more confidence" or "video games have benefits in the classroom besides grabbing students interest"
