Please capitalize where necessary: download the pdf version of the questionnaire for easier access anytime, anywhere.
A: Download the pdf version of the questionnaire for easier access anytime, anywhere.

Please capitalize where necessary: vitamin d: vitamin d appears to have anti-tumor effect against prostate cancer.
A: Vitamin D: Vitamin D appears to have anti-tumor effect against prostate cancer.

Please capitalize where necessary: solutions for a dangerous environment :: practical exercise
A: Solutions for a Dangerous Environment :: Practical Exercise

Please capitalize where necessary: lift the bottom corner, grabbing one layer of paper. in this case, the top upper corner, he does not hold.
A:
Lift the bottom corner, grabbing one layer of paper. In this case, the top upper corner, he does not hold.