The hydrocarbon which would most likely be an alkyne is COMPOUND W WHICH HAS A BOILING POINT OF -23.
This is because, among hydrocarbons, alkynes have the highest boiling points as a result of the triple bonds in their structures.
The boiling points of the other compounds are -103.7, -47 and -75; all these boiling points are lower than that of compound W.
It would be at a convergent plate boundary
They are related because the high pitch sounds correspond to the sound waves which give high and low frequencies.
It lights up the area its in and can start a fire