Its a dependent clause
and i think you meant "until" im not the grammar police but just sayin
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"
Wendy can read what she has written after a break and edit any grammar and spelling mistakes.
