Two planets a and B of same mass and same radius are shown in the figure even and P2 are densities of the material in the planets and P1 is greater than PT if the acceleration due to gravity on the surfaces of the planets are G1 G2 respectively then

less than one you can't create energy

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.

a. are