A synthesis reaction forms one product from two reactants.
It has the general form A + X ⇒ AX.
There are six steps to this process , I uploaded step one and as you can see you can get all six on Quizlet:). Good luck
When sediment has built up over time layers of rock start to form, starting with sedimentry rocks, then metamorphic rocks
The Answer Is A
Hope This Helps !