From the headlines, you'd think black holes were beasts with endless appetites, lying in wait for the next meal. By some reports they are "runaway," out-of-control "predators" that "feed" on galaxies, only to "belch" and "spit out" what they don't eat. They "lurk" in the shadows, "mangling" stars and "gobbling" them up. In short, they have a nasty reputation for being monsters "gone mad."
—A Black Hole Is NOT a Hole,
Carolyn Cinami DeCristofano
Based on the passage, who is the most appropriate audience for this book?
Which phrase best indicates the appropriate audience?