The error is definition structure...
Answer: Better security safer environments better employee experience and increased in collaboration
Explanation:
The answer to this question is D adjective
I would go with D) a large company or combined businesses that control specific market it sounds like it would fit.
I believe it is C, an in-text citation because it isn't A since you've cited the source, it's not a full works cited like D, and it's not in quotes so it's not a direct quotation like B. Hopefully that helps you out!