1 and a half (1 1/2) because a dot adds half or the value of the original note for example if you have a half note which is two beats and you add a dot the dot is now worth 1 beat (2 *1/2), which make the it 3 beats and that not is called a dotted half note....
Vibrato. It’s the same in vocals, changing pitch quickly in a way that sort of sounds like a vibration, though the technique itself is not called vibration.
Statement D would be the correct one! :D
