Complete the following sentence correctly. infrared light is a form of that is
a. radiation; visible
b. radiation; invisible
c. convection; visible
d. convection; invisible

e) none of the above answers are correct

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.