Two forces F1 and F2 are applied to a plank that supports a body of mass m, as shown in the figure. The distances between these forces and the body of mass m are L1 and L2, respectively. A. The values of F1 and F2 in static equilibrium depend on the choice of the axis of rotation.
B. In static equilibrium F1 = F2 for any values of L1 and L2.
C. The value of the sum (F1+ F2) that corresponds to static equilibrium is indepdendent of L1 and L2.
D. In static equilibrium, if L1 > L2, then F1 > F2.

The correct answer is - option C.

Explanation:

Given:

Two forces on a plank = F1 and F2

mass of plank = m

The distances between these forces and the body of mass m =  L1 and L2

we know that,

mg = F1 +F2 ( independent of L1 and L2)

so almost any point the value of the sum that corresponds to static equilibrium is independent of L1 and L2.

Thus, the correct answer is - option C.

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.

i think the answer would be reserve.