A Gamma-Ray Burst (GRB), Such as the One in the Figure

Multiple Choice

A gamma-ray burst (GRB) , such as the one in the figure below, may be responsible for some of Earth's mass extinctions.GRBs are hard to study because they

A) can only happen in distant galaxies.
B) are rare, of short duration, and very narrow.
C) emit very few gamma rays.
D) only generate gravitational waves.
E) are long-lived but rotating.