The comment that Isaac Newton will make on Mona-Lisa art is that the color of some of the parts should have fade colors due to the lightnings.
The Mona-Lisa painting is one of the great works of Leornado-da-vinci because the image can be interpreted in many way.
However, the great man "Isaac Newton"was a great mathematician popularly known for his prowess in optics and mathematics (calculus).
So, the comment that Isaac Newton will make on Mona-Lisa art is that the color of some of the parts should have fade colors due to the lighting because of his various contribution in discovery of lightnings.
A straight ticket is one in which you vote for candidates who are members of one party. A split ticket means you vote for some of each party (Democrats and Republicans).You ensure the chances of one party winning a majority by voting a straight ticket.
Explanation: This answer explains how a split and a straight ticket work in electoral politics.