Answer : C
Because $6.65 multiplied by 4 hours equals $26.60
The option that distinguishes a nuclear reaction from a chemical reaction is D. there is a change in the nucleus.
During a nuclear reaction, two light nuclei combine in order to create a new, heavier one which is different than those two original ones and has additional particles that it didn't have originally. This is what makes the difference between these two reactions.
If anything you would use a protractor but that’s not a answer.... so I would pick whatever relates to a protractor
I think that is called a Metamorphic rock.
