question: the tool can be modified at any time to suit changing needs: in this product group, the user can change the type and length of handles, or switch from straight to curved cutting heads.
Capitalize this past sentence correctly.
A: The tool can be modified at any time to suit changing needs: in this product group, the user can change the type and length of handles, or switch from straight to curved cutting heads.

question: - social security number, if this is chosen by the data controller for each document send for signing to a third party.
Capitalize this past sentence correctly.
A: - social security number, if this is chosen by the Data Controller for each document send for signing to a third party.

question: i've added a new picture!
Capitalize this past sentence correctly.
A: I've added a new picture!