Which organ helps a child develop immunity?

a)the thyroid
b)the thymus
c)the pancreas
d)the ovaries

B

Explanation:

I took the test on ed 2020 and got it correct

a

explanation:

because they are cartillidge

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.