I think that is the stupidest question ever (No offence). Of course you would use the one that doesn't need clearance or fee's. Like, Duh!
But I guess you also have to consider the quality of your pictures. If this physics lab write-up may be considered for some national competition (reusing the same paper for a different scenario) then I'd think that it's really up to you. Which one do you like the most?
To wrap things up, I honestly would choose the free one, but it always depends on your situation. How important is this project? Is this just homework for the teacher or is it going to be something bigger?
Yes the ansewer is c bc you can look it up!
Answer:
This is a Answer Not Question... But Answering it to explain what it is.
Explanation:
5x2 =69
Explication but brain