After a massive-star supernova, what is left behind? a. always a white dwarf b. either a neutron star or a black hole c. always a neutron star d. either a white dwarf or a neutron star e. always a black hole

2b2t

explanation:

2b2t

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.