question: but perhaps many know only images, and not the mechanism.
Capitalize this past sentence correctly.
A: But perhaps many know only images, and not the mechanism.

question: they cannot lead a life of enjoyment but must show their desire to live and be free.
Capitalize this past sentence correctly.
A: They cannot lead a life of enjoyment but must show their desire to live and be free.

question: when a.1-a.3 have been worked 1 time vertically, repeat a.4 vertically until finished measurements.
Capitalize this past sentence correctly.
A: When A.1-A.3 have been worked 1 time vertically, repeat A.4 vertically until finished measurements.