When music is legato,
a. the notes sound choppy.
b. the notes are played softly.
c. all of the notes are loud.
d. all of the notes are connected smoothly.?

D. all the notes are connected smoothly, it is the opposite of Stacato which is Short, and separated

Very true. in today’s age anything is possible.

Generally spontaneous human combustion is something that still bewilders some, human combustion happens very rarely and doesn't affect the surrounding areas, so unless you want to set your self on fire, human combustion will remain spontaneous and very rare.