Figure 1 represents the profile of a transverse wave on a string (t = 0) in the positive X-direction at a speed of 20.0 m/s. a) Determine the wavelength and the frequency of this wave.
b) calculate the maximum speed of the string oscillates between the two amplitudes. name this type of speed
​

it is called kinetic 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.

f=ma newton

f=100x2.5=250n