Which of the following sentences with a parenthetical expression is punctuated correctly? The fumes from oils and acrylics on the other hand, made Bob sneeze.

Cave paintings, in fact, are proof that the urge to create has always been part of what makes us human.

Oil paintings in my opinion, are unmatched in their ability to portray movement and energy.

Watercolor, unlike oil paint has a transparency that reflects light back up from the canvas.