Which of the following is a sentence fragment? I'm comfortable writing with either hand, but I prefer my right.
O Left-handed people are more creative, or so they say.
O All kangaroos are left-handed.
o Write left-handed, bowl right-handed.

The answer is most likely the 1st one.

As the boys sleep, military airplanes battle fiercely above the island. none of the boys sees the explosions and flashes in the clouds because the twins sam and eric, who were supposed to watch the signal fire, have fallen asleep. during the battle, a parachutist drifts down from the sky onto the island, dead.