What is in the hand of the man standing in the middle of the painting above?

Choose the term below that you would not find as a musical part of the medieval mass.

What is the quotient? 2m+4/8 ÷ m+2/6

To create an illustration of perspective, this artist did all of the following except 1) show clear orthogonal lines 2) have an implied vanishing point 3) distort proportion to keep the background and foreground the same size 4) include value changes between the foreground and background i was thinking maybe 1