Please capitalize where necessary: becoming a certified information security auditor takes quite a bit of preparation, as passing the cisa exam is a difficult task for even the most prepared candidate.
A: Becoming a Certified Information Security Auditor takes quite a bit of preparation, as passing the CISA exam is a difficult task for even the most prepared candidate.

Please capitalize where necessary: high definition picture and sound quality in full screen
A: High definition picture and sound quality in full screen

Please capitalize where necessary: most people perform a lot of different tasks every day, sitting at their desks in a large open space, surrounded by co-workers.
A: Most people perform a lot of different tasks every day, sitting at their desks in a large open space, surrounded by co-workers.

Please capitalize where necessary: there are a lot of things that should be on your mind when you are planning a trip abroad.
A:
There are a lot of things that should be on your mind when you are planning a trip abroad.