Maybe you should ask some real English questions .-.
"All of a sudden..." is a transition that shows suspense. It says something happened, but it didn't happen with any warning and it doesn't tell the reader up front what went on or if it was good or bad.
Answer:
D: since GMO's are fairly new into the Humans technology spectrum, we haven't had much time to test on it and experiment.
Explanation: Hopefully this helps
Staccato refers to the music term when every sound is short and disconnected with the other sounds.
