question: before you can open a od5 file, you'll need to figure out what kind of file the od5 file extension refers to.
Capitalize this past sentence correctly.
A: Before you can open a OD5 file, you'll need to figure out what kind of file the OD5 file extension refers to.

question: 2. protection of your sales area.ideas of design and all your private information
Capitalize this past sentence correctly.
A: 2. Protection of your sales area.ideas of design and all your private information

question: development of a structure for the training and certification of german-danish teams
Capitalize this past sentence correctly.
A: development of a structure for the training and certification of German-Danish teams