QUESTION: Fix punctuation: But a business feasibility report or plan is much more detailed
ANS: But a business feasibility report or plan is much more detailed.

QUESTION: Fix punctuation: The luminaire is quick and easy to fit easy to install easy to maintain and has low energy consumption
ANS: The luminaire is quick and easy to fit, easy to install, easy to maintain and has low energy consumption.

QUESTION: Fix punctuation: Horse pictures horses Pony pictures
ANS: Horse pictures, horses., Pony - pictures

QUESTION: Fix punctuation: In the case that your DATALESS file doesnt open it is highly likely that you do not have the correct software application installed on your PC to view or edit DATALESS file extensions
ANS:
In the case that your DATALESS file doesn't open, it is highly likely that you do not have the correct software application installed on your PC to view or edit DATALESS file extensions.